The word stylin is used commonly in new jersey/ny, stylin just simply meanss
bugged out, or being rude/disrespectful.
Buggin or "bugged out" is another term notifying that someone needs to chill or calm down simply because they said or did something that was either disrespectful or
unordinary.
girl:
Niqqa plz don't nobody want you, you madd ugly
boy: Yo you be "stylin" ,
you swear you da shitt man