
Whoa, whoa, now you're making FUN
of my bonafides?
The Big Bang Theory Season 10, Episode 4

made FUN of him,
and that's a thing
The Big Bang Theory Season 12, Episode 18

but I won't because we're having
too much FUN.
The Big Bang Theory Season 7, Episode 1

what could we do that's FUN?
The Big Bang Theory Season 7, Episode 21

Oh, yes, thank you.
I like to think of FUN things like that...
The Big Bang Theory Season 6, Episode 5