
because you no longer
wear UNDERPANTS.
The Big Bang Theory Season 5, Episode 4

Uh, no. We lock that door,
lower our UNDERPANTS a little,
The Big Bang Theory Season 10, Episode 8

"Leonard will restrict video gaming
in UNDERPANTS to hours Penny is not home.
The Big Bang Theory Season 10, Episode 13

I own nine pairs
of UNDERPANTS.
The Big Bang Theory Season 7, Episode 1

It's where your UNDERPANTS live.
The Big Bang Theory Season 9, Episode 10