When a man and a woman carefully align their assholes, both excreting simultaneously into one another in which their feces push against each other. Thus, making the two Hershey Logs "kiss".
The two extreme lovers enjoyed a delightful Hershey's Kiss after hardening their stools for a solid week.
When a male or female squats on their partners face during sex with their rectum above their lips. They then prerry dog their poop slightly on to their partners lips and retractit back in their rectum.