A male or female sits on another male or female's face. The person being sat on gets poo on thier lips. After the poo is applicated to the persons lips in a proper fashion the "sitter" gets up and gets kissed by the person with poo on their lips.
One participant is laying on their back with their knees behind their head and spreads their cheeks. The other straddles them perpindicularly, spreads their cheeks, and begins to squat until the buttholeslightly or roughly kiss.
A sexual act where a woman that has anal prolapse (where the anus is partially on the exterior of the body due to excessive anal sex), does not wipe after defecating, and "kisses" her partner on the lips with her puckered anus.
My girlfriend told me to close my eyes because she wanted to give me "The Hershey Kiss" for Valentine's Day. I was grossly mistaken when I tasted shit instead of chocolate.