I'm having sex with a Catholic
schoolgirl tonight.
The Big Bang Theory Season 7, Episode 21
I'm a good girl.
I went to Catholic school.
The Big Bang Theory Season 4, Episode 22
A Catholic girl like you
wearing a big cross like that...
The Big Bang Theory Season 3, Episode 5
...and I quote, she'd like to see
"the little Catholic girl first."
The Big Bang Theory Season 4, Episode 23
Brought a Catholic girl home
to your mother?
The Big Bang Theory Season 4, Episode 23