Like a milking STOOL,
my case rests on three legs.
The Big Bang Theory Season 3, Episode 16
...that it is possible
for the matter above this STOOL...
The Big Bang Theory Season 2, Episode 19
Now I can quit checking my STOOL.
The Big Bang Theory Season 8, Episode 2
and "Uh-oh, red STOOL from
beets leads to cancer scare."
The Big Bang Theory Season 5, Episode 6
...her vomit and STOOL
became filled with blood...
The Big Bang Theory Season 6, Episode 18