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

A "fuck boy" is someone a girl knows is just good for sex and nothing else. He's not to be taken seriously in regards to any type of serious commitment and the tell tale signs are usually quite obvious. The term "Fuck boy" tends to have a derogatory from scorned women who could not differentiate a "fuck boy" to a "prospect".
The skank finally cleaned up her act and was looking a serious relationship; karma bamboozled her with a merited fuck boy and she reverted back to her old ways more empty than ever.
by Jlats23 October 8, 2015

A fuck boy is someone who will be talking to many girls at one particular time. He will often be found at the campus bar drinking pitchers of Snake Bite while listing to old 2010 banger such as 'Written in the Stars' and 'Nothin' on You'. He is likely to consider himself a 'BNOC' despite not getting nominated on the official 'TAB' page. He is easily spotted as he often walks around the campus in a hoodie and a backwards cap. On the sesh, a fuck boy will have a tendency to get his dick out and demonstrate particularly vile and impressive party tricks to his fellow seshers. This guy is likely to be a Social Sec of a particular sport and will be damned if not everyone knows about his achievement. A fuck boy is a breaker of many hearts and has had many of tissues used by girls at his expense.
'Oh, that's Matt. He's social sec of lacrosse... don't trust him, he's a fuck boy'.
'He seemed really nice until he lit my cigarette from his foreskin. After that trick I knew he was a fuck boy.
'He seemed really nice until he lit my cigarette from his foreskin. After that trick I knew he was a fuck boy.
by JohnHenryBrookes May 6, 2017

by Dragon.fairy.gay April 14, 2020

Fuck boi: I blocked these bitches as soon as I was done.
Teen: Fuck off! You're just a boy, not a man.
Teen: Fuck off! You're just a boy, not a man.
by suck_my_d33 January 12, 2025

by Yourascumbag August 13, 2019
