Hey, Professor Proton.
The Big Bang Theory Season 11, Episode 15
Did you ever watch
Professor Proton
The Big Bang Theory Season 7, Episode 22
I know you have strong feelings
about Professor Proton,
The Big Bang Theory Season 11, Episode 15
- How'd you get him to come to your house?
- As Professor Proton always says:
The Big Bang Theory Season 6, Episode 22