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

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

But I don't want to know
how many UNDERPANTS you own.
The Big Bang Theory Season 7, Episode 1

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