
You know, understanding SARCASM.
Feigning interest in others.
The Big Bang Theory Season 6, Episode 8

No, I do not have a SARCASM sign.
The Big Bang Theory Season 1, Episode 2

Sarcasm?
The Big Bang Theory Season 5, Episode 16

That, FYI, was SARCASM.
The Big Bang Theory Season 3, Episode 1

I don't always recognize
SARCASM, but I do right now,
The Big Bang Theory Season 7, Episode 24