Barit1...I was trying to come up with a tongue-and-cheek answer having to do with how far up I could reach during the walk-around, but you have completely captured the thought...
First lesson as a new copilot: it's fine to stick your head out the window when counting the blades, but before responding to the command from your left of "Switch on!", be sure to fully withdraw your head from the window frame...it is pretty hard to suppress the startle reaction to the backfire, and the window frame hurts...