
...and naked bodies contorted
in the sweet agony of COITUS.
The Big Bang Theory Season 1, Episode 13

You're kidding! What kind of maniacs
have COITUS in someone else's bedroom?
The Big Bang Theory Season 9, Episode 16

Then light petting, no COITUS.
The Big Bang Theory Season 2, Episode 2

Childbirth, looming COITUS?
The Big Bang Theory Season 10, Episode 11

they just stay home
and have constant COITUS.
The Big Bang Theory Season 11, Episode 9