Why do girls act immature around guys they think are "hot"?

Like when girls are around me, they talk about the dumbest things, literally laugh like there is no tomorrow, and just act weird. I know they are trying to get my attention (and they do) but I just think they are annoying when they act like that. Why can't they just act normal?

Guys do you know what I am talking about?

Girls if you have ever done this, why do you act like that?
Why do girls act immature around guys they think are "hot"?
Post Opinion