Canadian Exhaust Pipe
Firstly a man must stick his own index finger into his pee hole up to the first knuckle. Then slowly remove index finger and insert a lit cigarette (filter first). Quickly begin to have rigorous and sweaty buttsex with another man. If the cigarette falls out of the first mans pee hole the partners must then switch positions. This act continues until either a.) You use an entire pack of cigarettes or b.) you ejaculate onto cigarette. If scenario b occurs the ejaculator then makes the other partner smoke the cum drenched cigarette.
It took Matt and Dave 4 hours to finish their Canadian Exhaust Pipe.