
I'm gonna check the temp on the TUB.
The Big Bang Theory Season 9, Episode 15

We can just, you know, stay here
and hang out in the hot TUB.
The Big Bang Theory Season 9, Episode 16

Um, question. This is my first hot TUB,
The Big Bang Theory Season 9, Episode 15

So we go back to their place,
and then the six of us end up in a hot TUB.
The Big Bang Theory Season 3, Episode 3

They must've left the TUB on,
The Big Bang Theory Season 10, Episode 5