What is a good flirty bet wager? :)?

I talked to a guy for a little while then we just kind of stopped because he's busy with getting ready for graduation, ect ect. I textedhim the other night & we talked for a bit, then I mentioned that I was playing ball with my cousins and his younger brother, actually I told him I was whooping his brother's a**. ;) it ended with him saying he was coming next weekend when we played, & us betting. We havent descided what the bet's wager is going to be because we're both too stubborned. So, I need some cute/flirty ideas! Like a kiss or something, thankss. :]]