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

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

Your DOCTORATE is in neurobiology.
I fail to see the distinction.
The Big Bang Theory Season 4, Episode 24

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

You've heard him tease me
about not having a DOCTORATE.
The Big Bang Theory Season 5, Episode 21