A world where you can pay... with your body! From simple caresses to full-on unprotected handholding, all forms of intimate acts are now simply a type of payment, some more worth than the other. The inhabitants of this world have a mental restriction that prevents them from eg. kissing someone as many times as they want, but YOU are exempt from this rule.

Oh, and there are these kind of ATM's where people can trade in their accumulated intimate favors into actual cash, and they Physically can't lie about it so it has no security stuff. And since you, the user, is exempt from the rule, you can technically cash out millions. But uh... inflation is important to think about.