Done with 2 persons... let's say person A and person B
A shits in B's mouth
B vomits into A's Asshole
A shits vomitty poop into B's Ass
Finally, B poops into A's mouth.
There you have it, a spaghetti factory
I heard that Jake and Jim ate at the spaghetti factory last night. Jim has a really tummy ache.