
...who invests in a store that sells picture
books about flying men in colorful UNDERWEAR...
The Big Bang Theory Season 8, Episode 4

Why are you wearing
long UNDERWEAR?
The Big Bang Theory Season 5, Episode 23

Hidden inside our UNDERWEAR?
Money Heist Season 1, Episode 13

He got his feelings hurt,
then he put UNDERWEAR on his head--
The Big Bang Theory Season 10, Episode 12

So either one of you weirdoes wanna
buy my UNDERWEAR? Only 1400 bucks.
The Big Bang Theory Season 4, Episode 2