A fuck boi is that one 15 year old boy you have on facebook who posts selfies of himself pouting with more than one filter applied over the picture and gets way more like than he deserves.
Typically fuck bois have gelled quiffs, think that it is acceptable for a boy to pout in photos and frequently post selfies with their 'six pack' in full display.
They have over 100 likes on their profile picture because they have 2,000 girls as friends facebook and simultaneously flirt with them all, have smoked weed twice yet own HUF socks and post pictures of their Nikes on instagram with the heart eyes emoji as the caption.
Fuck bois often think that they are cool for bragging about having sex or getting drunk.
"this fuck boi needs to stop writing soppy paragraphs on my facebook newsfeed, everyone knows he's only doing it to get into the pants of one of the 2,000 girls he's friends with"
a man who loves being surrounded by girls aka his side chicks. Hes seen hugging or flirting with different girls. He may tell you that he love you but he only want you for sex, so BEWARE OF ANY GUYS THAT FITS THAT CATEGORY
Someone who openly cheats on their girlfriend who isn't there at the moment
Makes girls uncomfortable even after they ask them to stop Makes sex jokes at wrong times
Shames girls who reject them
FB: Ur ass and boobies r great
Poor girl: I told you a thousand times that makes me uncomfortable and you have a girlfriend FB: would you suck snake poison out of my dick? I'd suck it out of your boobies!
Girl: * IGNORES*
FB; wow what a hoe
"Gosh, Daniel is such a fuck boy. He wouldn't leave her alone after she told him no"
"Jacob is cheating on his girlfriend again and texting that girl who isn't interested. geez, what a fuck boi."