
...and eat with the JANITOR.
The Big Bang Theory Season 4, Episode 22

I have two PhDs yet somehow
I'm the JANITOR
The Big Bang Theory Season 7, Episode 11

So may I introduce the third-floor JANITOR,
the lady from the lunch room and...
The Big Bang Theory Season 1, Episode 13

Hans the JANITOR.
The Big Bang Theory Season 11, Episode 15

Here, I am JANITOR.
In former Soviet Union, I am physicist.
The Big Bang Theory Season 1, Episode 13