SHELDON: Go ahead.
That's the only DOCTORATE you'll ever get.
The Big Bang Theory Season 6, Episode 9
I have a DOCTORATE
from Indiana University.
The Big Bang Theory Season 12, Episode 5
Is it any wonder
he doesn't have a DOCTORATE?
The Big Bang Theory Season 4, Episode 18
I've been thinking about getting my DOCTORATE,
and he wants to teach. Why not?
The Big Bang Theory Season 8, Episode 2
Bernadette got her DOCTORATE.
The Big Bang Theory Season 10, Episode 11