
Hysterical.
The Big Bang Theory Season 4, Episode 20

I think I'm HYSTERICAL.
The Big Bang Theory Season 7, Episode 12

He does this HYSTERICAL impersonation
of Stephen Hawking having phone sex.
The Big Bang Theory Season 2, Episode 11

Yeah, it's HYSTERICAL.
The Big Bang Theory Season 4, Episode 22

That's HYSTERICAL.
The Big Bang Theory Season 7, Episode 15