
It's a CHILDISH trick designed to confuse
and intrigue simpletons.
The Big Bang Theory Season 4, Episode 18

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

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

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

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