
No, I think we have to be more SUBTLE.
The Big Bang Theory Season 4, Episode 19

Subtle, Mom. Real SUBTLE.
The Big Bang Theory Season 8, Episode 23

I'm sorry, was I being too SUBTLE?
The Big Bang Theory Season 4, Episode 3

Really? Did you miss the SUBTLE indicators?
Like me saying, "Howard, I am upset."
The Big Bang Theory Season 3, Episode 7

- Subtle.
- Yeah, but you got it, right?
The Big Bang Theory Season 8, Episode 18