no he said, "oh it's already started" and started walking towards him, the white kid obviously thought the black dude was playing games and he learned a hard lesson, he was obviously talking shit about the black guy because he kept repeating that over and over while he was destroying him.
dude, no way,,,you have been watching too many movies..

...I think the white guy just interrupted whatever the black guys was saying thats all.
the black guy was probably making a plea for a cheap membership or something and the white guy just acted all high and mighty saying sorry bro then was probably going to ask him and his houligan buddies to leave.