Hershey kiss

The sexual act of pulling butt cheeks apart and rubbing anuses.

Karen winked over her shoulder, and grabbed her asscheeks, spreading them like yeast rolls. "Your move", she said cheekily.

Blanche paused for a moment, surveying that exquisite valley. "Yeah, I'm in", she replied, spreading her own cheeks and bringing her anus in for a perfect Hershey kiss.