Crimson Grilled Cheese

For males: Sticking you penis in a cheese grater, and thrusting it repeatedly. After this, you rub the resulting injury between two pieces of bread. Eat the resulting meal.
For females: Rubbing a cheese grater against your vagina repeatedly. After this, rub the resulting injury on a piece of bread. Eat the resulting meal.
For partners: Take the cheese grater in you hand, and if your partner is a male, rub the cheese grater against his penis and then rub the injury between two pieces of bread. If your partner is a female, rub the cheese grater against her vagina, and then place a piece of bread in the resulting injury. You may share the resulting meal.

For the real kinksters: The male should put his penis in side the cheese grater and thrusts as far as he can inside inside the female. Then, put a piece of bread between you mangled penis and get shredded vagina
(Cheese may be used, but not required.)