
Yes, I really am a DOCTOR.
Yes, she really is my girlfriend.
The Big Bang Theory Season 9, Episode 15

All I know, Mommy,
is that he's a single, wealthy DOCTOR...
The Big Bang Theory Season 8, Episode 22

And I'll watch the last 24 minutes
of Doctor Who...
The Big Bang Theory Season 1, Episode 7

Wow! So that means you're a DOCTOR,
you're a DOCTOR...
The Big Bang Theory Season 4, Episode 24

It’ll be the internal medicine DOCTOR,
won’t it? I don’t know.
Money Heist Season 1, Episode 13