(Adj.) Short for fantasy, fake, flaky, unreal, or an exaggeration.
(Noun) A pretender, a hypocrite, someone who falsely claims to be something, someone who is living in a fantasy, a compulsive liar, someone who is two-faced, or a fake friend.
"Jerome stay telling me he gets girls when we both know he's still a virgin."
"That nigga is mad fant."
"Did Solange really think she's a singer?"
"That chick is a fant, you can't be serious."