
...to protect the genetic integrity
of your sister's future OFFSPRING.
The Big Bang Theory Season 1, Episode 15

Prepare your uterus
for his gigantic OFFSPRING?
The Big Bang Theory Season 7, Episode 13

...produces the strongest OFFSPRING.
The Big Bang Theory Season 1, Episode 15

There's no guarantee our sperm's
going to generate high-IQ OFFSPRING.
The Big Bang Theory Season 1, Episode 1