
BOTH: Dr. Sheldon Cooper's
Fun with Flags.
The Big Bang Theory Season 12, Episode 13

Yes, there is. Oh, here's a FUN fact.
The Big Bang Theory Season 3, Episode 17

Got a really FUN
evening for you.
The Big Bang Theory Season 5, Episode 14

Yeah, we had our FUN.
Money Heist Season 3, Episode 8

Behind every man is a nagging woman
who won't let him have any FUN, right?
The Big Bang Theory Season 4, Episode 9