Let's not talk about the world's problems here. We're just talking about YOU. What would you do for yourself?
Personally, I would turn myself into a hot anime chick and fulfill my desires. I would make it so that the next orgasm is 999,999,999,999,999,999,999,999,999,999,999,999,999,999 times better than the one before it. I would keep on going for as long as I wanted to. I wouldn't get bored of that very easily!
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I'd turn invisible and fly through my High School's halls. But at the same time, I'd be naked, so my dick would just be slapping people in the face. Their reactions to it would be amazing.