Punch/slap you. или if it's extremely weak. Laugh at you,insult Ты and then ignore it. If Ты attempt to do it again i'll grab Ты hand to stop Ты from slapping me.
Damn everybody be answering they'd retaliate back или smth :v
I'm p weak physically so i have my ways when dealing w/ these things. I'd either yell out "sexual harassment" if it's in public или just use some pepper spray if no one's around.