
Oh, of course,
because I'm the only ADULT around here.
The Big Bang Theory Season 9, Episode 21

You're an ADULT who can't get by
without an allowance from his parents.
The Big Bang Theory Season 10, Episode 16

This nephew who is...
I mean, he's an ADULT.
Breaking Bad Season 2, Episode 12

but he's an ADULT now, and maybe
The Big Bang Theory Season 9, Episode 14

Really? "The only ADULT"?
The Big Bang Theory Season 9, Episode 21