But you using Sheldon
to do your DIRTY work,
The Big Bang Theory Season 9, Episode 21
Dirty, DIRTY, DIRTY.
The Big Bang Theory Season 4, Episode 21
It's DIRTY laundry. You're up.
What? You...
The Big Bang Theory Season 7, Episode 3
An old, DIRTY liar.
The Big Bang Theory Season 12, Episode 12
You're a-a DIRTY...
The Big Bang Theory Season 5, Episode 2