It's where your UNDERPANTS live.
The Big Bang Theory Season 9, Episode 10
But I don't want to know
how many UNDERPANTS you own.
The Big Bang Theory Season 7, Episode 1
Instead of UNDERPANTS, I covered
my crotch with potato salad. Thoughts?
The Big Bang Theory Season 3, Episode 15
"Leonard will restrict video gaming
in UNDERPANTS to hours Penny is not home.
The Big Bang Theory Season 10, Episode 13
Uh, no. We lock that door,
lower our UNDERPANTS a little,
The Big Bang Theory Season 10, Episode 8