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
He was so busy figuring out
how many parts per million of URINE...
The Big Bang Theory Season 8, Episode 9
that converts URINE
into drinking water.
The Big Bang Theory Season 5, Episode 15
The water the astronauts drink
is made from each other's recycled URINE.
The Big Bang Theory Season 6, Episode 1