Yes, and I think it's pretty
MATURE of me to admit it.
The Big Bang Theory Season 11, Episode 11
...now you're more MATURE.
The Big Bang Theory Season 8, Episode 20
how emotionally MATURE you are,
didn't you?
The Big Bang Theory Season 11, Episode 15
That's very MATURE of you.
The Big Bang Theory Season 9, Episode 13
and that stands for
"MATURE audiences," buster.
The Big Bang Theory Season 9, Episode 21