There's some poor woman
who's gonna pin her hopes on my SPERM.
The Big Bang Theory Season 1, Episode 1
Oh, maybe I could sell my blood and SPERM!
The Big Bang Theory Season 10, Episode 17
I will find an appropriate SPERM donor
for your eggs...
The Big Bang Theory Season 1, Episode 15
I've never reneged
on a proffer of SPERM before.
The Big Bang Theory Season 1, Episode 1
I know....SPERM.
The Big Bang Theory Season 12, Episode 12