...her vomit and STOOL
became filled with blood...
The Big Bang Theory Season 6, Episode 18
...that it is possible
for the matter above this STOOL...
The Big Bang Theory Season 2, Episode 19
Like a milking STOOL,
my case rests on three legs.
The Big Bang Theory Season 3, Episode 16
Now I can quit checking my STOOL.
The Big Bang Theory Season 8, Episode 2
a bar STOOL dipped in cholera?
The Big Bang Theory Season 5, Episode 2