
Oh, you SILLY doodlebug.
The Big Bang Theory Season 6, Episode 8

Don't be SILLY.
The Big Bang Theory Season 12, Episode 2

Don't be SILLY. Just tell him.
The Big Bang Theory Season 6, Episode 23

Now you're just being SILLY.
The Big Bang Theory Season 4, Episode 9

Well, she'd just look SILLY
wearing that
The Big Bang Theory Season 5, Episode 19