Does anybody do this?

[Python]

This works great unless the back of your shorts gets caught on the nose of the saddle. I've been WAY too close to mooning folks with this method.

I've done that a few times too. Usually catch the top of the chamois

I swing right leg over bike, right foot on pedal (strongest leg for take-off), settle onto saddle (if I haven't attempted to moon the traffic first), left foot on pedal and away.