Thought I'd add another popular internet game to the forum.
A huge vending machine stands before you! You can put in whatever you like and receive something else in return, usually related to whatever you put in.
Person 1: I insert a cow.
Person 2: You get a bottle of milk.
Person 2: I insert a meteor.
Person 3: You get a bunch of squished dinosaurs.
Person 3: I insert Rush Limbaugh.
Person 4: You get a steaming pile of bullshit. Er, I mean, you get Rush Limbaugh back. It's kind of hard to tell the difference.
Person 4: I insert a kitten.
and so on.
So I'll start by inserting a kitten.