Insecurity & Self-Consciousness #1

I’m very insecure about my backside. I find a man’s backside very sexy and I envy guys who have nice ones. I love strong broad shoulders, a good muscular back, and a nice firm tight ass! One thing about myself that I’m really insecure, is my booty. I wish I had a better one (>.< ) I guess I should go do more booty work-outs! Anyone know any good exercises to work and shape the posterior?