It could mean one of many things. It could mean that the guy is curious in what all is out there. Or it could me it was a friendly gesture. It could mean he is trying to get your attention or he just needs someone to be there for him. I don't think you have to worry until his hands are down your pants. :) I think your safe for now.
Yes
It usually means that he wants to have sex with you.
It means that that guy really loves you and it's also really bad so don't let a guy do it to you.:)
If you're ugly be happy. If you're pretty punch him.
it may meen that he likes u :D
it means he wants to kiss you
You should just go along with it and touch him up too.
He wants to draw your attention to himself.
A guy may rub a girl's waist if he likes her. A guy may also do it accidentally when walking by and it may not mean anything.
It means that you're it. Go chase him and touch his side.
UM HELLO HE LIKES YOU hes totally flirting!!!
IT means he thinks your cute or hot