If to the HAT you don
while wearing a nightshirt...
The Big Bang Theory Season 4, Episode 21
Okay, do not wear this HAT.
The Big Bang Theory Season 12, Episode 10
l ought to be wearing
a tinfoil HAT, you know?
Breaking Bad Season 4, Episode 7
Yes, but which HAT?
The Big Bang Theory Season 11, Episode 15
It's also a HAT.
The Big Bang Theory Season 11, Episode 13