Not sure. But not all girls perceive it this way. Some girls view it the other way around.
they don't!
Because guys do gross immature things
most of all mature girls not some girl who is childish
Because you probably annoy them- or they like you. If you like her, and she says your childish- then she most likely thinks your immature
Because it is immature and childish!
Not all the time. Guys are sometimes different and like the girl who's more mature.
they think its childish but i dont think it is at all
Some guys may find it cute or endearing when girls act childishly in certain situations. Others may prefer maturity and independence. It ultimately depends on personal preferences and the context of the behavior.
Call her when needed? If you're interested in her, you shouldn't call her deliberately for no good reason to get her attention as that's the childish way of courtship. Girls are generally interested in matured guys who know when to be serious and when to be casual. They also prefer tall guys and are drawn to kind-hearted guys. I got all this info from National Geographic Channel :)
Yes, most will. Remember that guys become childish around girls they like and some even serious, but they both share the same goal. They want to impress you.
the guys want the girls to notice them
Some are guys, some are girls.