
She's right. As long as you're vomiting,
COITUS is contraindicated.
The Big Bang Theory Season 2, Episode 9

I know we only have COITUS
on my birthday,
The Big Bang Theory Season 11, Episode 11

engaged in drunken COITUS
with another woman.
The Big Bang Theory Season 7, Episode 1

That I have COITUS with her.
The Big Bang Theory Season 9, Episode 11

Technically,
that would be COITUS interruptus.
The Big Bang Theory Season 1, Episode 1