i used to like M&Ms when i was growing up, and my dad used to constantly tell me if i didn't stop eating them, then i would start to look like an M&M. I think i started to believe that when my mom told me that I was fat, ugly, and stupid, and would never amount to anything (that was 4th grade). I'm not fat, and i'm not stupid, but i still see a 'fat female' behind everything.
Also, although my brother and I are friends, it didn't help that when i was growing up, my hair used to be pretty wavy... not curly not straight, my brother used to make fun of my 'wavy' hair, and i was always self conscious of it. It's okay now though, but growing up it sucked!