I'm 15 and I'm a lot more developed than most girls in my freshmen class (chest, hips, and behind) and guys give me unwanted attention. My school has this thing called "slap butt Friday" and everyone thinks it's just a-okay to hit mine. I get so angry that I just want to cry. I feel like I'm too young to be getting these types of things happening to me and I just want it to stop. Any advice?