battered pony
The art of having intercourse with someone after they have been smeared with faeces. The most common practice is having intercourse with three particapents, the third smears the one being fucked (ridden - hense the 'pony')with shit (the 'batter'), making sure that they do not notice in the heat of the moment.
Matt Lee: "i sure enjoyed being covered with shit by Josh Harris whilst being pounded up the ass by his mother, i was one heck of a battered pony. "