A guy who will tell a girl anything to get them to hook up with them. A complete jerk who flirts with multiple girls at a time and makes them all believe they're individually special. They tell a girl they like them and act like they're in love so that they can get something out of it like pictures, hooking up, sex, etc. Someone who should not be trusted and is the reason for a lot of people's trust issues. Dont fuck with a fuckboi.

Friend 1: Yoo is Ashley still with James?
Friend 2: Nah didn't you hear? He told her he loved her and then asked another girl out.

Friend 1: What a fuckboi

Fuckboi by Iheardaboutyouuuuu May 31, 2015

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fuckboii

A lieing cheating manipulative man whore that has an ego bigger than his dick he has no heart he's simply heartless and will never be happy because all he does is use people and lead them on into thinking he loves them

That nigga Tyzon is a fuckboii he ain't about shit

fuckboii by Scarlett Moon January 14, 2016

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Fuckboii

A boy who tricks you into thinking he's a sweetheart so you hookup with him. Then turns on you viciously and becomes a grade A asshole.

Michael Detorre is a fuckboii.

Fuckboii by ljcoolgirl April 15, 2015

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