Warning: Reproduced at this size, the smaller text in the image is unreadable. You can read the operators, and its still pretty funny to anyone who knows Perl.
Product Information

Not too tight, not too loose.
Fabric Thickness:
The most comfortable t-shirt ever! Our 100% cotton, Hanes Authentic Tagless T-Shirt is preshrunk, durable and guaranteed.
- 6.1 oz. 100% cotton
- Standard fit