Quite a few times I've heard it mentioned that when Peter went to Europe he had a hilarious first encounter with Polish king Augustus. They agree to have a meal, and when King Augustus arrives he realizes that one of the silver plates is dirty. Displeased, he rolls the silver plate into a tube. Peter thinks August is displaying strength, so Peter picks up the silver plate in front of him and does the same thing. Augustus sees the challenge and picks up another plate, and the men roll up all the plates until they reach the end and have a laugh at the way they've broken the ice.

I've heard that a few times and I just saw it repeated again in a documentary I'm watching, but when I've looked I haven't seen any kind of source for it. I would like to believe its true, it's really funny.