
You did call him
a glorified science TEACHER...
The Big Bang Theory Season 1, Episode 4

I used to think my PE TEACHER didn't like me,
but it turned out she liked me a little too much.
The Big Bang Theory Season 8, Episode 4

Padawan's the student,
not the TEACHER.
The Big Bang Theory Season 7, Episode 24

- What are you doing?
- If you're gonna be a crappy TEACHER...
The Big Bang Theory Season 8, Episode 2

Is it, "Where was the TEACHER?"
The Big Bang Theory Season 11, Episode 13