I've never reneged
on a proffer of SPERM before.
The Big Bang Theory Season 1, Episode 1
You're paying?
Have you been selling your SPERM again?
The Big Bang Theory Season 2, Episode 22
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
There's some poor woman
who's gonna pin her hopes on my SPERM.
The Big Bang Theory Season 1, Episode 1