Each battle should have a minimum of 3 players, more is recommended.
Each player will be playing as a fat-assed femboy Pokemon. If you aren't one normally, just play one of your usual species.
The players pics should involve big asses. The snorlax's pics will all involve big cocks or hairy ass.
If you rate his pic an 8 you must give him a buttjob. If you rate his pic a 9 you must eat his swampy asshole. If you rate it a 10 you immediately are enthralled and he may instantly fuck you into mindbreak. You're out.
He has 200 HP and whatever he rates you is subtracted from it. However if you get a 1 he will instantly flatten you under his ass or ballsack. If you get a 10 he will be so turned on that he fucks you into mindbreak. Either way, you lose.
That is the challenge, you must turn him on to do damage, but score too high or two low and you're done for!