with just a HINT of
"That's right, I had servants."
The Big Bang Theory Season 5, Episode 4
I'll give you a HINT,
The Big Bang Theory Season 10, Episode 5
Don't worry, I can take a HINT.
The Big Bang Theory Season 7, Episode 3
Hint: it's a cube of a cube
of a prime.
The Big Bang Theory Season 12, Episode 23
Hint: it's based
on Sanskrit,
The Big Bang Theory Season 12, Episode 2