
Do you know how CHILDISH you sound
right now?
The Big Bang Theory Season 3, Episode 7

Don't make it sound CHILDISH.
The Big Bang Theory Season 12, Episode 14

Guys, you're
being CHILDISH.
The Big Bang Theory Season 7, Episode 16

That's a bit Childish, isn't it?
The Big Bang Theory Season 10, Episode 11

- You're being CHILDISH.
- No. He is.
The Big Bang Theory Season 8, Episode 21