There is this guy in my math class that I used to like. Lately he has been kinda perverted. Today he asked me if he could touch my butt and I kept saying no. How do I tell him no in a different way so he can get it through his head?

Probably the best way to get your point across and never have it happen again is to give him a nice slap on the cheek to let him know that it's rude to even ask you something like that! Sometimes it's the only way ! I'll bet he doesn't ask ever again!

I'd tell him if he doesn't quit asking me that I'm gonna sock him in the nose.

I never touched a girl when I was in school, I don't know what to think of these guys nowadays... Where is this world going to? Sad:(

That is so disgusting! If he doesn't get the message, you need to tell someone! It's technically sexual harassment, and people can get charged for that, even imprisioned. Tell a teacher, tell a parent, tell a councillor and get help!