
...is an expression of longing
for his missing FORESKIN?
The Big Bang Theory Season 6, Episode 5

Hey, look at me, I don't have a FORESKIN.
The Big Bang Theory Season 1, Episode 15

If I find my FORESKIN, I'm gonna kill myself.
The Big Bang Theory Season 8, Episode 18

I'm sorry, Amy, you were saying something
about Howard's FORESKIN?
The Big Bang Theory Season 6, Episode 5