1 definition by Callieman

Top Definition
A frat guy who bones everything that walks and get's absolutely hammered every chance he gets.
Slut: "Hey, I think I've slept with that guy a couple times before."

Frat guy: "Yeah, we call him Gilbertron because he fucks the shit out of every girl he meets."
by Callieman October 27, 2012

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