Why do girls go to the bathroom in groups?

Girls are group people, if there's something that they want to say to each other, what better place than a bathroom? usually we don't even have to go. Being alone is weird for some girls, too, so that's another reason.

It's a social thing, they go and talk there, put on more makeup, they maybe actually have to go to the bathroom, or b/c they don't know where it is.

Well to talk about how the night is going and talk about how they are looking and What they think will goo on later.

That usually means we are talking about you. The bathroom is the one place we can get away from guys and touch up our makeup, check out anything in our teeth, and comment on other girls or guys.