
Maybe pick names out of a HAT.
The Big Bang Theory Season 7, Episode 3

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

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

It's also a HAT.
The Big Bang Theory Season 11, Episode 13

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