Fuckboi, often the ghetto spelling of "Fuckboy" is word used to describe a guy who is an untrustable, self centered, ass hole. Fuckbois often share the following characteristics:
-white skin
-wears snap back hat
-wears Nike Elite socks
-wears basketball shorts and flip flops to a funeral
Also, Fuckbois are known to do the following:
-Ask for a ride and offer gas money, then after the ride claim they lost their wallet - when in reality they are just broke
-Claim they just left and are on the way when they haven't even left their bed
-take selfies with a small stack of 20s or 100s
-take pictures of shoes and snap back hats
That Fuckboy spends all day ignoring his girl friend while he plays on Tinder