When one gay male is having anal sex with another gay male and the male that is fucking the other male in the ass, shits in his hand and rubs it in the other males face, while he is fucking him.
When an unsepecting woman is pounced on from behind when they are lying on their stomach and brutally analed while getting their vagina stuffed with household items or the surpriser's fecaces.
After a night of sex, if your partner is asleep in the morning with there mouth open, you bend over their head and take a giant shit in their mouth. They will then choke on it not expecting it and voila a german sunrise surprise.