People Who Think They Know Everything Shirt

Men
Size Guide

Size Chart

SIZE WIDTH LENGTH
S 18 in 28 in
M 20 in 29 in
L 22 in 30 in
XL 24 in 31 in
2XL 26 in 32 in
3XL 28 in 33 in
4XL 30 in 34 in
5XL 32 in 35 in
Unisex T Shirt size chart
Unisex T Shirt size chart
  • 5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
  • Heavyweight classic unisex tee
  • Taped neck and shoulders; Tearaway label
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
S 46 cm 71 cm
M 51 cm 74 cm
L 56 cm 76 cm
XL 61 cm 79 cm
2XL 66 cm 81 cm
3XL 71 cm 84 cm
4XL 76 cm 86 cm
5XL 81 cm 89 cm
Unisex T Shirt size chart
Unisex T Shirt size chart
  • 5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
  • Heavyweight classic unisex tee
  • Taped neck and shoulders; Tearaway label
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
S 17.25 in 25.5 in
M 19.25 in 26 in
L 21.25 in 27 in
XL 23.25 in 28 in
2XL 25.25 in 28.5 in
3XL 27.25 in 29 in
Ladies T Shirt size chart
Ladies T Shirt size chart
  • 100% preshrunk cotton; Ash Grey 99% cotton, 1% polyester
  • Feminine 1/2 inch rib mid scoop neck; sideseamed with slightly tapered Missy fit
  • Double-needle stitching throughout; seamless rib at neck
  • Decoration Type: Digital Print
SIZE WIDTH LENGTH
S 43.8 cm 64.8 cm
M 48.9 cm 66 cm
L 54 cm 68.6 cm
XL 59 cm 71 cm
2XL 64 cm 71.8 cm
3XL 69.2 cm 73.7 cm
Ladies T Shirt size chart
Ladies T Shirt size chart
  • 100% preshrunk cotton; Ash Grey 99% cotton, 1% polyester
  • Feminine 1/2 inch rib mid scoop neck; sideseamed with slightly tapered Missy fit
  • Double-needle stitching throughout; seamless rib at neck
  • Decoration Type: Digital Print
SIZE WIDTH LENGTH
S 20 in 26 in
M 22 in 27 in
L 24 in 28 in
XL 26 in 29 in
2XL 28 in 30 in
3XL 30 in 31 in
4XL 32 in 32 in
5XL 34 in 33 in
Crewneck sweatshirt size chart
Crewneck sweatshirt size chart
  • 8 oz; 55% cotton/45% polyester
  • Air jet yarn for a softer feel and no pilling
  • 1x1 athletic rib cuffs and waistband with spandex; Double-needle stitching
  • Care: Machine wash cold; Tumble dry low
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
S 50.8 cm 66 cm
M 55.9 cm 74 cm
L 68.6 cm 71 cm
XL 66 cm 73.7 cm
2XL 71 cm 76 cm
3XL 76.2 cm 78.7 cm
4XL 81.3 cm 81.3 cm
5XL 86.4 cm 83.8 cm
Crewneck sweatshirt size chart
Crewneck sweatshirt size chart
  • 8 oz; 55% cotton/45% polyester
  • Air jet yarn for a softer feel and no pilling
  • 1x1 athletic rib cuffs and waistband with spandex; Double-needle stitching
  • Care: Machine wash cold; Tumble dry low
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
S 20 in 26 in
M 22 in 27 in
L 24 in 28 in
XL 26 in 29 in
2XL 28 in 30 in
3XL 29 in 32 in
4XL 32 in 33 in
5XL 34 in 34 in
Unisex hoodie size chart
Unisex hoodie size chart
  • 5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
  • Heavyweight classic unisex tee
  • Taped neck and shoulders; Tearaway label
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
S 50.8 cm 66 cm
M 55.9 cm 74 cm
L 68.6 cm 71 cm
XL 66 cm 73.7 cm
2XL 71 cm 76 cm
3XL 73.7 cm 81.3 cm
4XL 81.3 cm 83.8 cm
5XL 86.4 cm 86.4 cm
Unisex hoodie size chart
Unisex hoodie size chart
  • 5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
  • Heavyweight classic unisex tee
  • Taped neck and shoulders; Tearaway label
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
S 18 in 28 in
M 20 in 29 in
L 22 in 30 in
XL 24 in 31 in
2XL 26 in 32 in
3XL 28 in 33 in
4XL 30 in 34 in
5XL 32 in 35 in
Long sleeve T Shirt size chart
Long sleeve T Shirt size chart
  • 5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
  • Heavyweight classic unisex tee
  • Taped neck and shoulders; Tearaway label
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
S 46 cm 71 cm
M 51 cm 74 cm
L 56 cm 76 cm
XL 61 cm 79 cm
2XL 66 cm 81 cm
3XL 71 cm 84 cm
4XL 76 cm 86 cm
5XL 81 cm 89 cm
Long sleeve T Shirt size chart
Long sleeve T Shirt size chart
  • 5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
  • Heavyweight classic unisex tee
  • Taped neck and shoulders; Tearaway label
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
YXS 16 in 20.5 in
YS 17 in 22 in
YM 18 in 23.5 in
YL 19 in 25 in
YXL 20 in 26.5 in
Youth T Shirt size chart
Youth T Shirt size chart
  • 5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
  • Heavyweight classic unisex tee
  • Taped neck and shoulders; Tearaway label
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
YXS 40.6 cm 52 cm
YS 43.2 cm 55.9 cm
YM 45.7 cm 59.7 cm
YL 48.6 cm 63.5 cm
YXL 50.8 cm 67.3 cm
Youth T Shirt size chart
Youth T Shirt size chart
  • 5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
  • Heavyweight classic unisex tee
  • Taped neck and shoulders; Tearaway label
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
XS 16 in 27 in
S 18 in 28 in
M 20 in 29 in
L 22 in 30 in
XL 24 in 31 in
2XL 26 in 32 in
3XL 28 in 33 in
Men tank top size chart
Men tank top size chart
  • 5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
  • Heavyweight classic unisex tee
  • Taped neck and shoulders; Tearaway label
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
XS 40.6 cm 68.6 cm
S 45.7 cm 71 cm
M 50.8 cm 73.6 cm
L 55.9 cm 76.2 cm
XL 61 cm 78.7 cm
2XL 71 cm 83.8 cm
3XL 81.3 cm 81.3 cm
Men tank top size chart
Men tank top size chart
  • 5.3-ounce, 100% cotton (99/1 cotton/poly (Ash) & 90/10 cotton/poly (Sport Grey)
  • Heavyweight classic unisex tee
  • Taped neck and shoulders; Tearaway label
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
XS 14 in 27 in
S 15 in 27.5 in
M 16 in 28 in
L 17 in 28.5 in
XL 18 in 29 in
2XL 19 in 29.5 in
Women racerback tank top size chart
Women racerback tank top size chart
  • 4 oz, 60% combed ring-spun cotton/40% polyester jersey
  • 30 singles
  • Fabric laundered for reduced shrinkage; Runs small, we suggest ordering up
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
XS 35.6 cm 68.6 cm
S 38 cm 69.8 cm
M 40.6 cm 71.1 cm
L 43.2 cm 72.4 cm
XL 45.7 cm 73.7 cm
2XL 48.3 cm 74.9 cm
Women racerback tank top size chart
Women racerback tank top size chart
  • 4 oz, 60% combed ring-spun cotton/40% polyester jersey
  • 30 singles
  • Fabric laundered for reduced shrinkage; Runs small, we suggest ordering up
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
YS 14 in 17 in
YM 16 in 19.5 in
YL 18.75 in 23 in
YXL 20.5 in 24.5 in
Youth pullover hoodie size chart
Youth pullover hoodie size chart
  • 7.75-ounce, 50% cotton, 50% polyester
  • No drawcord on kids' hoodies
  • We suggest ordering one or two sizes up for a fuller fit; Please refer to size chart for actual garment measurements
  • Decoration type: Digital Print
SIZE WIDTH LENGTH
YS 35.5 cm 43.2 cm
YM 40.6 cm 49.5 cm
YL 47.6 cm 58.4 cm
YXL 52.1 cm 62.2 cm
Youth pullover hoodie size chart
Youth pullover hoodie size chart
  • 7.75-ounce, 50% cotton, 50% polyester
  • No drawcord on kids' hoodies
  • We suggest ordering one or two sizes up for a fuller fit; Please refer to size chart for actual garment measurements
  • Decoration type: Digital Print
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Estimated arrival: Place your order today (standard shipping method) to receive the product(s) within Apr 22 - Apr 28

Apr 19

Apr 20 - Apr 22

Apr 22 - Apr 28

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People Who Think They Know Everything Shirt

The People Who Think They Know Everything Shirt is made for the sarcastic, sharp-witted person who loves a clever punchline. When you wear the People Who Think They Know Everything Shirt, everyone instantly knows you’ve got a sense of humor and a brain to back it up.

People Who Think They Know Everything Shirt 1
People Who Think They Know Everything Shirt 1

This tee features a bold white slogan on a classic dark background that reads People who think they know everything annoy those of us that do. The clean, easy-to-read font makes the joke pop from across the room, turning a simple T-shirt into a guaranteed conversation starter. Made from soft, breathable cotton, this shirt feels smooth against your skin and is comfortable enough to wear all day at work, at school, at the pub, or while relaxing at home. The fabric has a nice weight that drapes well without feeling heavy, and the unisex cut offers a relaxed, flattering fit for a wide range of body types.

You should buy this shirt because it combines sharp humor, everyday comfort, and a standout design in one easy piece, making it perfect for expressing your personality, starting conversations, and giving a clever gift to friends, coworkers, or family who appreciate a smart joke.

If you’re the person people come to for answers or you simply like to pretend you are this is the tee that says it for you. The People Who Think They Know Everything Shirt is ideal for casual Fridays, meetups, game nights, office parties, and any moment when you want your outfit to do the talking.

Welcome to GullClothes’ Shipping Policy. We are committed to providing you with the best shopping experience, including a clear and efficient delivery process.

1. Shipping Locations and Costs

  • Shipping Locations: We ship to most countries worldwide. If your location is not available during checkout, please contact our support team at support@gullclothes.com for assistance.
  • Shipping Costs:
    • Within the U.S.: $5.99
    • International Shipping: Starting from $14

2. Order Processing and Shipping Times

Total Delivery Time = Handling Time + Shipping Time. Please refer to the table below for estimated times:

2.1. For USA Regions:

Item Handling Time (Mon-Fri) Shipping Time (Mon-Fri)
Apparel 1-3 days 3-7 days
Mug 2-3 days 3-7 days
Poster, Canvas 1-3 days 3-7 days
Hats 2-3 days 6-8 days
Bedding 3-5 days 7-10 days
All-over print product 6-8 days 8-10 days

2.2. For Other Countries:

  • Handling Time (Mon-Fri): 6-8 days
  • Shipping Time (Mon-Fri): 9-17 days

Please Note: Public holidays, destination countries, and couriers may also affect shipping times. Please allow extra time for unforeseen circumstances. While we make every effort to ensure timely delivery, we are not responsible for shipping delays caused by the shipping carrier, delivery destination, customs clearance, weather conditions, holidays, or incorrect/insufficient delivery information.

3. Delivery Information

  • Shipment to Multiple Addresses: Unfortunately, we do not offer shipment to multiple addresses for a single order. If you wish to have items delivered to multiple addresses, please place separate orders.
  • Delivery to PO Boxes or Military APO/FPO Addresses: Yes, we can ship to PO Boxes and Military APO/FPO addresses.

4. Customs and Duties (International Orders)

For international shipments from the U.S., we operate on a Delivered Duty Unpaid (DDU) basis and do not collect Value Added Taxes (VAT). Any taxes, duties, or customs fees applied upon arrival in your country are the recipient’s responsibility. Depending on the destination country, your package may be subject to local customs or VAT charges. We recommend contacting your local customs office for more information on your country’s customs policies.

5. Delayed or Lost Packages

While we work with reliable shipping partners, delays or lost packages may occasionally occur. If your package is delayed beyond the estimated delivery timeframe, please contact us at support@gullclothes.com so we can assist you.

6. Incorrect Shipping Information

Please ensure that your shipping information is accurate before completing your order. GullClothes is not responsible for delays or losses caused by incorrect addresses.

7. Returns and Refunds

If your package is returned to us due to incorrect address information or failure to collect, we will contact you to arrange a reshipment. Additional shipping fees may apply. For more details, please refer to our Return Policy.