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
Get the Fuck boimug. 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
Get the Fuck boymug. by Never_again28 April 19, 2018
Get the Fuck boymug. A Fuckboy is the type of guy who does shit that generally pisses the population of the earth off all the time. He will also lead girls on just for hookups, says hes really into you but doesn't want to deal with all the "relationship bullshit" just to fuck you. He thinks about himself and only himself all the time but pretends to be really nice. He also does really fucked up shit and then complains about people who do the same old shit as him. once a fuckboy always a fuckboy, because fuck boys ganna be fuckboys
Orignaly created by Boys High
Orignaly created by Boys High
by Regualr101 September 30, 2017
Get the Fuck boymug. 
Someone who is only looking for a piece of ass to use and emotional support from the person without defining the relationship
friend #1: I've been dating a guy and we've become super close these days. But he doesn't want a relationship.
friend #2: Oh, so he's a serious fuck boy.
friend #2: Oh, so he's a serious fuck boy.
by sunnio October 9, 2020
Get the serious fuck boymug. A guy who pretends he's been hurt and doesn't have many friends to make you feel sorry for him and hang out with him then you find out he's been sleeping with tonnes of people and just been manipulating and lying to you the whole time.
by KK713 July 18, 2016
Get the Fuck boimug.