
If to the HAT you don
while wearing a nightshirt...
The Big Bang Theory Season 4, Episode 21

He's wearing a HAT,
glasses and a red-striped shirt!
The Big Bang Theory Season 6, Episode 4

Okay, do not wear this HAT.
The Big Bang Theory Season 12, Episode 10

He must be wearing a tinfoil HAT
or something.
The Big Bang Theory Season 6, Episode 6

- Bye, guys.
- Like your HAT.
The Big Bang Theory Season 2, Episode 2