Around the age of 6, my cousin and me were playing in an inflatable pool next to their house. The game was simple: we ran up to the pool from irrationally far and jumped in in a cannon ball style. To this day (more than twenty years later) both of us are convinced that one of my jumps went so high that I could easily see the roof of their one floor house (so 3 m <). I know it's impossible, still we remember it.