
I've been thinking about getting my DOCTORATE,
and he wants to teach. Why not?
The Big Bang Theory Season 8, Episode 2

get a DOCTORATE.
The Big Bang Theory Season 5, Episode 21

Bernadette got her DOCTORATE.
The Big Bang Theory Season 10, Episode 11

Is it any wonder
he doesn't have a DOCTORATE?
The Big Bang Theory Season 4, Episode 18

I have a DOCTORATE in astrophysics
and I'm every bit as awesome
The Big Bang Theory Season 10, Episode 11