Rusty Assassin

A sexual act in which one engages in surprise, consensual coitus with a partner, where he and/or she sneaks up behind the target and begins to perform any type of penetration, as the second partner releases their bowels. The defecate may be purposeful or not, either way the instigator or “assassin” will be covered in excrement, thus the pre-fix “rusty”, as it gives the appearance of being covered in a splotchy brown substance.