It's a lightsaber
belt BUCKLE.
The Big Bang Theory Season 7, Episode 7
Well, then, BUCKLE up.
The Big Bang Theory Season 1, Episode 4
It said right there on the invitation,
"Buckle up for fun!"
The Big Bang Theory Season 10, Episode 19
Ooh, look, a new Batman belt BUCKLE.
The Big Bang Theory Season 2, Episode 20
It's a light saber
belt BUCKLE.
The Big Bang Theory Season 12, Episode 24