That is a FOOLISH expense,
and I forbid it.
The Big Bang Theory Season 10, Episode 17
and it is FOOLISH to try and compare them.
The Big Bang Theory Season 10, Episode 8
"pretty darn FOOLISH right now.
I'm talking about you,
The Big Bang Theory Season 12, Episode 23
Sheldon, it's FOOLISH to be angry
that Bert's work has merit.
The Big Bang Theory Season 10, Episode 9
But I now realize how FOOLISH that is.
The Big Bang Theory Season 3, Episode 10