You've gotten off work a bit early, and found yourself with a free afternoon, which you decided to spend wandering around the carnival for a while looking for something interesting to do. You're walking around when a photo booth catches your eye, and you stop to check it out. As you watch through the window, a kid goes into the photo booth and presses a few buttons on a console. Some mechanical arms come down and start spraying him with paint, and within just a few minutes, he's covered with paint that makes him look exactly like a movie-quality Spiderman. The booth takes a few pictures, then removes the paint, leaving the kid looking like he did when he stopped in the booth.
"Holy cow, this thing is amazing!" you remark out loud.
"Yah, it's hard to believe, isn't it?" says a voice behind you. You turn around and see a coworker of yours, Dennis. You groan inwardly; you've never really gotten along with Dennis. He is nice enough, but he's always just a little too aggressive, and just a bit full of himself, and he always manages to get his way somehow.
"Oh, hey Dennis, didn't expect to see you here. You don't seem like the carnival kind of guy"
"Well, I'm not, but my little girl Karen here is. Figured I'd take her out to the carnival since we all got out early." You look down at the young girl next to Dennis and wave hi, and she smiles and waves back. "Actually, I was hoping I could call in that favor you owe me. You know, for covering your shifts on short notice that week you had to be out?"
"Well, uh, what kind of favor do you want?" you warily ask Dennis. Dennis leans in close to you. "I'm stuck taking care of my little sister Karen, and she saw someone done up in some body paint from the booth, and now she won't stop harassing me for a picture with someone painted up. I can't do it myself, if my friends see pictures of me as some kinda cute animal or clown or something, I'll never hear the end of it. Would you be willing to be a pal here and step in for me?" Dennis asks, in a tone that indicates he won't take no for an answer.