
It is. They're what hold back
the URINE and feces.
The Big Bang Theory Season 8, Episode 18

and he had to drink
URINE for...
Breaking Bad Season 2, Episode 9

passed out in a puddle
of his own URINE.
The Big Bang Theory Season 5, Episode 7

...extracted from the URINE of cows.
The Big Bang Theory Season 4, Episode 22

How much URINE
do these suits hold?
The Big Bang Theory Season 5, Episode 24