A type of underwear that comes in the color white normally. The most popular brands of them are Hanes, and Fruit of the Loom. There is also Calvein Klein Underwer.
Tighty wighties are considered uncool because there most popular target is little kids and old men. If caught wearing them as a teen then you will be pantsed or wedgied. Thats why only nerds wear them.
How do i know that only nerds wear them? I know because i am a nerd and i wear them. And i have 2 friends that are nerds. They both wear tighty wighties. My friend wears hanes and his brother who is also a nerd wears fruit of the loom tighty wighties.