Future and Ciara's nasty break up is gold for hecklers who want to bother either star.

But a man who taunted Future with the name of his ex during an appearance he was making at Chicago sneaker boutique RSVP got more than he bargained for when some of Future's Freebandz crew started throwing punches at the heckler.

While there were some reports that the man either spit at Future or flashed a knife, the camerman who shot the footage reports the scuffle was about bringing up Ciara.

Something to think about if you ever run into Future and his crew.