The art of fornicating with a female during her period. also referred to as parting the red sea, geting your red-wings, or canoeing in a blood ocean.
Friend: Hey alex, what are you up to tonight?
Alex: Im exercising my religion, im acting as menstrual moses in my bedroom play with nicole tonight.
Friend: Damn homie, make sure you wear a condom
Alex: Christianity does not permit the use of condoms, im skinny dipping tonight!