So it went beyond the mere fact
of COITUS to a blow-by-blow, as it were.
The Big Bang Theory Season 4, Episode 20
Technically,
that would be COITUS interruptus.
The Big Bang Theory Season 1, Episode 1
Childbirth, looming COITUS?
The Big Bang Theory Season 10, Episode 11
Have you had COITUS with any of them?
The Big Bang Theory Season 9, Episode 9
I find the concept of COITUS ridiculous
and off-putting.
The Big Bang Theory Season 6, Episode 20