(not funny at all, but I though some may find almost slightly amusing the idea that poped in my head when I looked at the picture.))
Guy holding other guy: "Where is my lunch money?"
Guy being held: "huh? You made me spill some of my milk, what is the idea?"
1st guy: "20 years ago in elementary school I loaned you some money for lunch and you promised to pay me back in 20 years and I"m here to collect."
2nd guy: "20 years ago, I can barely remember this morning. Here take this and keep the change."