Climb onto it as you would a horse.
>I do that anyway; nervously, expecting it to bite me at any moment. :o)
>Or do you mean by placing one foot on the footpeg to gain height?
No, you fool; sit on the gable end or your house, with the 'bike parked below.
Leap onto the saddle with your legs spread.
Shout "Hi Ho, Silver, away!"
And topple gracefully sideways with crushed nuts (and a chocolate sauce).