Einstein's relativity equations
The Big Bang Theory Season 11, Episode 13
"Pop A Cop Kop A Bop A Gop."
The Big Bang Theory Season 5, Episode 1
Just put it in your mouth and POP it like a zit.
The Big Bang Theory Season 8, Episode 21
He's not gonna POP out
and surprise me?
Breaking Bad Season 5, Episode 15
♪ Agent try to come through
Pop, POP, POP, POP, POP you down ♪
Breaking Bad Season 4, Episode 2