
Yes, but which HAT?
The Big Bang Theory Season 11, Episode 15

a Helmet of Confusion spell
on Billy the Kid's cowboy HAT?
The Big Bang Theory Season 5, Episode 10

"Nice HAT, Bob Tahecin."
The Big Bang Theory Season 5, Episode 12

Indiana Jones was the one
in the HAT with the whip.
The Big Bang Theory Season 7, Episode 4

And a pointy HAT
sticking out of your eyeball.
The Big Bang Theory Season 8, Episode 22