Uh, RASH. That's a bad RASH.
The Big Bang Theory Season 4, Episode 6
And I told you
I get diaper RASH!
The Big Bang Theory Season 7, Episode 14
Uh, RASH. That's a bad RASH.
The Big Bang Theory Season 4, Episode 6
Now, let's not do anything RASH.
The Big Bang Theory Season 5, Episode 7
before making any RASH...
The Big Bang Theory Season 7, Episode 13