Owens tells us he intended to quickly stop by the store and grab a few necessities. While inside, T.O. says a 49ers fan approached him and they had a friendly conversation. That’s when things took a turn.

Terrell says a second man — the guy who was ultimately clocked — started talking crap to the fan Owens was conversing with. The aggressor threatened to beat up the men outside, according to witnesses. …

Unfortunately, the heckler who allegedly started the confrontation just minutes earlier inside the store took an unprovoked swing at Owens.

A mistake … and the fight was on.

[This may be one of the better “f*** around and find out” stories I’ve seen of late. — Ed]