For the past year or so, I've come to realize that everytime I lift my right leg and then put it down, my hip pops. It feels almost like the ball and socket joint is loose or something. It doesn't usually hurt though. But i could lift my leg up and down over and over and its just goes pop pop pop pop pop. I've asked my mom and all of my friends if theirs pops like that and only one friend can do that too, but not as frequently as mine. Is it a rare girl thing with our hips or does it happen to a lot of people???