
And a complete SUCKER.
The Big Bang Theory Season 6, Episode 21

Sucker.
The Big Bang Theory Season 5, Episode 5

That SUCKER is well named.
The Big Bang Theory Season 7, Episode 6

STUART:
That's right, SUCKER!
The Big Bang Theory Season 8, Episode 1

You're kind of a SUCKER.
The Big Bang Theory Season 10, Episode 1