Yes. Buck up.
The Big Bang Theory Season 5, Episode 1
...but I'd rather swim BUCK naked
across the Ganges...
The Big Bang Theory Season 3, Episode 4
You're intimidated by Amy's intellect.
To that, I say BUCK up.
The Big Bang Theory Season 4, Episode 3
There's gotta be other ways
you can make a quick BUCK.
The Big Bang Theory Season 10, Episode 17
Buck up, sissy pants.
The Big Bang Theory Season 5, Episode 1