When I was a student, I moved into a house in my second year with two other students. We had all brought a glass bottle of Heinz tomato ketchup with us. I had been learning to juggle that summer, so the obvious thing to do was to juggle the three bottles of ketchup. Equally obviously, I dropped two of them on the hard kitchen floor within a few seconds, splatting ketchup everywhere. What my housemates thought of this, within a few hours of moving in, I have no idea.