it means she wants you, assuming it is done purposely. if not on purpose it means nothing.
It probably means the guy likes looking at the girl's butt.
nothing really. she just has a nice butt that's it =]
That she is ticklish.
She's feeling frisky
That's an interesting concept. How does one do that?
did it hurt?
She is going to have a baby.
she could just be dancing. or she might like you if she is shaking her butt near you.
They probably like them!<3
When a girl tries to kiss your bellybutton, it is a way of showing affection.
i think they're mating