uart wrote:I don't want to get too prescriptive, but ...
The bike must be tilted over to the right, at an angle of between 12 and 18 degrees from vertical. The left foot should remain clipped in, with the left crank at a forward angle of between 80 and 110 degrees from vertical, while the unclipped right leg should extend to the ground and be kept dead straight.
The left buttocks or left hip bone should align with the nose of the saddle, whilst ALL of the genitals should remain entirely on the right hand side of (and NOT in contact with) the top tube.
The right hand should be placed on the right hip, while the left forearm rests casually on the quadriceps of the bent left leg (or alternatively, both hands may remain on the hoods if departure is imminent). The left hamstring muscles should rest gently on the top tube to help stabilise the bike, but as mentioned above there must strictly be no genital contact.
Anyone who doesn't sit on their bike in exactly this manner while stationary is a total mug and should be thoroughly ridiculed.
Oh hang on, a great deal of this would relate to left or right side dominance. For example, if you're a right side dominant person, logically you'd want to keep your right foot clipped in for the initial power kick of the line, and everything else should be aligned to optimise that initial power stroke. Conversely, if you're a left side-dominant person, everything will be mirrored to suit.
And if you're ambidextrous, well you can either unclip both feet & be left floundering while the rest blast you off at the lights, or try to trackstand and inevitably unclip one or both feet a split second before the light turns green.
I had a thought, but it got run over as it crossed my mind.