Can be achieved in two manners:

1. Having sexual intercourse with a woman on her period, removing your penis and placing it in her anus, then ejaculating. Blood=Strawberry, Fecal Matter=Chocolate, Semen=Vanilla

2. Do the same except forgoe the vaginal sex and use no lube for the anal causing chafing which can eventually cause bleeding.

When you eat dirt for the first time and leave your family to build a shack in the woods