You want to head
UPSTAIRS and...
The Big Bang Theory Season 11, Episode 17
They're UPSTAIRS.
The Big Bang Theory Season 12, Episode 17
Leonard is UPSTAIRS right now
with my archenemy.
The Big Bang Theory Season 2, Episode 2
One of them is UPSTAIRS. The other one
sort of slipped back into my skull.
The Big Bang Theory Season 4, Episode 18
- Is Leonard around?
- He's UPSTAIRS at Alicia's.
The Big Bang Theory Season 2, Episode 19