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I Thought You Knew Funny Sarcastic T-Shirt

$19.99
Free shipping when you spend $75.00+ (United States only). Promotion auto-applied on checkout.

Bold sarcastic quote tee with a clean white text: “I’m sorry I called you stupid, I thought you knew.” A witty statement shirt from Mischief Haven, perfect for funny streetwear, humor, and edgy everyday style.

📦 Shipping & Delivery

Each T-shirt is made to order. Please allow 2–5 business days for production.

  • 🇺🇸 US orders: Estimated delivery within 5–12 business days from the order date.

  • 🌍 International orders: Typically 2–4 weeks after production.

  • 📍 Order tracking: A tracking link will be sent by email once your order ships. Tracking updates may occasionally pause during transit.

  • 💰 Customs & import fees: International orders may incur additional duties or taxes depending on the destination.

↩️ Returns & Refunds

Because our T-shirts are made to order, we cannot accept returns for incorrect sizing or change of mind. If your order arrives damaged, defective, or incorrect, please contact us through our store’s contact option within 30 days of delivery. Include your order number and clear photos of the issue.

For full details, please read our Refund Policy at the top of our store. 🖤

Thanks for supporting Mischief Haven!

Select color: Black

Select size

More details

  • 100% cotton
  • Sport Grey is 90% cotton, 10% polyester
  • Ash Grey is 99% cotton, 1% polyester
  • Heather colors are 50% cotton, 50% polyester
  • Heavyweight fabric (5 oz)
  • Regular fit
  • Pre-shrunk jersey knit

Quality Guarantee & Returns

  • Quality is guaranteed. If there is a print error or visible quality issue, we'll replace or refund it.
  • Because the products are made to order, we do not accept general returns or sizing-related returns.

I Thought You Knew Funny Sarcastic T-Shirt Size Guide

Size guide preview
Size label Length Width Sleeve length
S
28
18
15.63
M
29
20
17
L
30
22
18 1/2
XL
31
24
20
2XL
32
26
21 1/2
3XL
33
28
22.8
4XL
34
30
24.2
5XL
35
32
25.3

Our suppliers provide the measurements. There may be a deviation of up to 2 inches (5 cm) in the product dimensions.

A useful tip! Compare measurements with a product you already own at home by measuring it and matching it to the sizes in this guide.

A Length

Start the tape at the collar's top next to the shirt's highest point on the shoulder. Extend the tape to the shirt's bottom.

B Width

Begin at the seam just under one sleeve and extend the tape across to the seam under the other sleeve.

C Sleeve length

Start measuring from the back center of the collar, follow the top seam of the sleeve to the shoulder, secure the tape at the shoulder, and continue down to the end of the sleeve.