The act of splitting a crumpet with a partner or by yourself. You deficate and smear your feces on both sides of the crumpet. You then close the crumpet and continue to ejaculate on top of the crumpet. You then put it in the oven to harden it a little and pour a mixture of urine and feces over top of it and serve it to your next victim
When was the last time we had a good crumping