table tennis balls dropped on the floor at once would create the same impact force as 29 average chicken eggs. Seriously. Only it would be a lot easier to clean up after dropping tennis balls than eggs, so this was never confirmed by an actual experiment.
550 is the number of tiny flies I have squashed on my PC screen over the past week. I think they are hatching out of the compost my indoor geraniums are in. Honestly! I can barely see what I'm writing for tiny squidged body parts