(TMZ) - Will Smith did not take kindly to a reporter who showed some affection to the Men in Black III star - and it was all caught on tape.

The Ukrainian reporter tries to kiss Will on the lips on the red carpet and the actor angrily pushes him away and then backhands him across the face. You can clearly see that Will is incredibly pissed that the guy showed overt affection toward him.

After Will slaps the guy, Will says, "He's lucky I didn't sucker punch him."

TMZ reports the dude who kissed Will is a television reporter who often kisses celebrities - it's his schtick.

A source close to Will tells TMZ, the reporter's mouth brushed up against Will's and that's why the actor reacted so violently. Despite the incident, Will continued doing red carpet interviews.

Check out the video: