Heres what you do, kick him in the nuts, run, and hope he isnt faster than you...
In all seriousness though... If the kid has more friends than you (which is entirely possible) I would deffinatly just leave him alone and leave well enough alone. Because if you fight him and hurt him or something, your goona get your ass kicked by his friends, or if he beats the shit out of you (which is entirely possible) your goona get laughed at and lose whatever respect you have... either way you will probably end up fucked