An electrical, mechanical and civil engineer get talking about god, the mechanical engineer says "God's obviously a mechanical engineer, just look at bone structure, how all those joints and muscles work together to make motion!" the electrical engineer pipes up, "No, no, God's obviously an electrical engineer, you only have to look at the nervous system, how they're wired up to give us life!" the civil engineer quietly smirks; "You're both wrong! God's a civil engineer, who else would run a waste pipe through a recreational area?