
Now, let's not do anything RASH.
The Big Bang Theory Season 5, Episode 7

Uh, RASH. That's a bad RASH.
The Big Bang Theory Season 4, Episode 6

That woman didn't get heat RASH once
with me on powder patrol.
The Big Bang Theory Season 10, Episode 10

And I told you
I get diaper RASH!
The Big Bang Theory Season 7, Episode 14

before making any RASH...
The Big Bang Theory Season 7, Episode 13