Jack: "I've got a crush on Kendall."
Me: "Oh really? What do you think it means to have a crush?"
***At this point, I'm expecting a standard answer such as, "It means I like her" or "I want to marry her". However, Jack's definition was a little bit less conventional***
Jack: "Well, when you are standing up next to her, you jump on top of her and start to wrestle with her."
I guess that is one way of putting it :)