when someone is jealous or they are coping you
it can also be used sarcastically
chris: yo i just saw brittany with the same shirt
you: ugh fan behavior
When a mf stays talking shit and won’t get off your Dick
Thomas always tells me this guy Chris calls him a bitch everyday.
That’s some fan behavior right there.
A hater that still wants to be updated on what you are up to. Then they talk cap shit about you to your close friends to try and ruin your reputation.
You know Barbie? She keeps on talking to me about what you are up to and talking trash about you, such fan behavior. She needs to get a life.