The pleasure of ejaculating a dick thrusting and overflowing into the clothed ass of a full-back panty.

I love butts like I can't help it. When I see a woman's butt, I can't control my emotions. I want to touch it...I want to keep rubbing it hard. I want to thrust my dick...I want to let my foolishness taste the elasticity of her ass! I want to crawl in the crack or insert it through the gap between the panties and be caught between the panties and the buttocks!