I had a boss before who had the bubbliest butt in the world. It helps as well that he was very cute. Every time he passes by my office or walk by me, I can't help but turn around to check out his butt.. and I think he knew it too.
One thing that adds to a man's sexiness is the shape of their butts. A guy could be muscular and cute but without the butt, they lose some points. Thighs do count too. Thunder thighs gives that special hotness. No?