So they poke/hit/punch you and you go to hit back and they won't let you? Yeah, this always happens to me. I'm pretty sure it means they like you and/or find you attractive. Do they hit ugly/fat girls? Probably not... Like the guy who used to do that to me showed up at my house one day saying he was just in the neighborhood-at 9:00 at night when it's 20 degrees... But, yeah just sass them and say, "Why are you gay? You don't want girls to touch you?".