fuck boy is is a guy cares only about sex . he take forever to text you back . he doesn't let you talk to other boy but he can screw as many girls as he want's he always cancels on you at laft he last minute and gets mad when you can't do what he wants
by princess_grossrich December 12, 2016

A fine-ass man/boy you only want to have sex with. Basically, just a piece of meat. I.e. "RiCkY NeLsOn wUz a FUCK BOiiii." A man who only makes u think about SAXxxxXXx. A man who forgets girls names when is done w them.
by Benton4000 March 31, 2016

by Never_again28 April 19, 2018

by Man Stamos August 17, 2015

In gaming, a Fuck boi is a suck up little bitch who has his head so far up your leader's ass that you swear the next time that leader opens his/her mouth, Fuck boi's face is going to snap out like the second jaws of that fucking monster in Aliens.
Stop trying to insinuate yourself into every aspect of our guild, fuck boi! You've only been a member for three months.
by Onimod November 9, 2015

The newest person to a work place or a team. Someone that is out of the knowledge loop. Especially in a training environment. If you have to ask what a fuck boi is you just might be one.
by Sachromyces September 5, 2016
