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

I need to throw in a few last-minute things.
You know, makeup, UNDERWEAR, clothes.
The Big Bang Theory Season 8, Episode 22

...but turned out to be
Howard's mom's UNDERWEAR.
The Big Bang Theory Season 6, Episode 6

And they... They...
They don't wear UNDERWEAR.
The Big Bang Theory Season 9, Episode 11

if I get my UNDERWEAR
pulled over my head.
The Big Bang Theory Season 5, Episode 11