I'm having sex with a Catholic
schoolgirl tonight.
The Big Bang Theory Season 7, Episode 21
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
They kind of whup that out of you
in Catholic school.
The Big Bang Theory Season 4, Episode 22
but I don't think dressing up
like a Catholic schoolgirl
The Big Bang Theory Season 7, Episode 21