Sorry this task is coming late to you Anon!
Since I really don’t have any information, here’s a kind of generic endurance task for you.
Step one: play with yourself until you’re nice and worked up
Step two: Get out a deck of playing cards. Not having a deck of cards is no excuse - you can get them at pretty much any dollar store, grocery store, or big box store and if you’re too lazy or cheap to spring for a deck (btw, slap your genitals 10 times HARD as punishment) there are programs online I’m sure that will let you draw random cards.
Step three: Shuffle it. And keep the jokers in.
Step four: while you’re worked up, start to rub or stroke slowly and lightly to keep the mood up.
Step five: Draw a card (face card is ten, Ace is 11) and go fast and hard for that many seconds NO CUMMING . Then go back to slow and light for 25 seconds.
Step six: If you get a Joker you’re a lucky slut! You get a full edge before backing off and then 90 seconds of light play before you pull another card.
Keep pulling cards until you get to the end of the deck. If you make it to the end of the deck without cumming you get a nice reward of an orgasm (or another edge if you’re a denial slut) for being such a good little slut.
Punishment - If you don’t make it to the end of the deck add up the value of the cards left. That’s the number of degrading words you have to write on your body. BONUS - if any of those is a Joker that means you’re going to be writing SLUT across your forehead and if you get both add WHORE across your cheeks with your mouth as the O.
Oh, and did I mention, if the number of cards left was more than 10 I’ll be extremely disappointed and will expect that many swats on your ass so you’ll be a better slut next time.