When I stop at lights, I usually just lean my hand on a street post. If there isn't one, I usually get off. My friend tells me that I should be standing on the ground, right pedal halfway, with my crotch on the tube, but I basically have negative standover height (aka my nads are pressing against the tube)! My LBS tells me that the 17 mountain bike I'm riding is perfect, and a 15 would be too cramped. What's the correct way to stop and idle?