Frequent COITUS dramatically increases
the odds of fertilization.
The Big Bang Theory Season 1, Episode 15
Sheldon, I know we took COITUS
off the table, but I was wondering
The Big Bang Theory Season 10, Episode 4
the obvious answer is,
they engaged in COITUS.
The Big Bang Theory Season 5, Episode 1
Let me assure you, we will not
engage in workplace COITUS.
The Big Bang Theory Season 12, Episode 5
She has COITUS one time,
suddenly she's Gloria Steinem.
The Big Bang Theory Season 10, Episode 5