
The water the astronauts drink
is made from each other's recycled URINE.
The Big Bang Theory Season 6, Episode 1

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

No, that measuring cup
has always been for URINE.
The Big Bang Theory Season 1, Episode 11

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

...which could give
a positive URINE test for opiates...
The Big Bang Theory Season 1, Episode 5