On the POTTY? What are you, 5?
The Big Bang Theory Season 4, Episode 3
There-There's chapters
about POTTY training,
The Big Bang Theory Season 7, Episode 4
...to measure your brain waves
while POTTY training.
The Big Bang Theory Season 2, Episode 15
...not the president
of the Potty Mouth Club.
The Big Bang Theory Season 6, Episode 9
Potty is innocent. Potty is adorable.
The Big Bang Theory Season 4, Episode 3