The slang word 'F**k Boy' means all sort of things and trust me, not good things. Careful girls! Not to fall for a Bleep boy..here are few tips to help you identify one so as to pack your bags and run away from one as fast as you can!‎
1) He moves in groups , his friends are basically just like him ‎.
2) He uses the terms 'ho's'‎.
3) He talks too much.
4) He has no ambition‎.
‎5) He calls random girls.
6) He says exactly what he thinks you want to hear.
7) He blows all plans to hang out with you but he's always in your DM *singing..it goes down in the DM* lol!‎.
8 ) He meets you today and says he loves you tomorrow.
9) He's always popping the question, "you wonna come over?"‎.
10) The minute he finds out you know his password, the next minute he's changing it.
11) Every girl has to appear on his display pictures.
12) He finds a way to get nude pictures of almost every girl.
13) He's disrespectful to his mother.
14) He never wants to be seen in public with you.
15) He's the kinda guy that says you look tired when you're not on makeup, he's very judgmental about your appearance.

CREDIT: Osagie Issy. ‎

source: http://bleechreport..com.ng/2016/06/15-ways-to-identify-fk-boy.html