There were five girls and five men with cocks over eight inches long and they were simultaneously deep fucking the girls arse holes doggy style, moving from one girl to the next. Another girl was on the side blindfolded who had to suck each cock as it came passed before the man inserted his erect penis back into the first girls bum hole.
This system kept going until a man cum inside a girls bum hole then he was out of the loop. As long as a man could last without cumming he could keep going round the loop fucking all the girls bum holes in turn then having his cock sucked by the sixth girl.
The prize for being the last man to cum was that you didn't have to swallow the cum out of one of the girls arse holes. The final rule for the losers was that you had to eat the cum of someone else out of a bum hole, you couldn't eat your own cum out of the bum hole you cum in.
If you happened to cum in the sixth girls mouth you had to eat the cum from all of the girls bum holes.
Depending on your kink though it could be easy to be a loser