
Yeah, it's a bad IDEA.
The Big Bang Theory Season 6, Episode 9

Oh, no, that's probably
not such a good IDEA.
The Big Bang Theory Season 1, Episode 3

You know, that'’s a good IDEA.
The Big Bang Theory Season 12, Episode 4

You have no IDEA. They're everywhere.
The Big Bang Theory Season 3, Episode 4

Sheldon, maybe living together
is a bad IDEA.
The Big Bang Theory Season 10, Episode 4