I don't know, maybe it's the fumes
from the URINAL cakes,
The Big Bang Theory Season 10, Episode 8
...about the time you dropped
his iPhone in a URINAL?
The Big Bang Theory Season 4, Episode 6
I tend to stand too close
to the URINAL, so...
The Big Bang Theory Season 5, Episode 21
At least go with me so you can
open the door and flush the URINAL.
The Big Bang Theory Season 4, Episode 23
Yeah, I can consider a place
America's URINAL cake
The Big Bang Theory Season 9, Episode 13