A teen boy rides a bike in the yard and goes off a ramp, but leans too far back, so he slips and falls when he lands.
A young boy rides a bike off a ramp in the yard and he flips over the front and falls on the ground.
A man climbs onto a penny-farthing bike in a parking lot and it flips over and he falls down.
A young boy rides a tricycle on all fours, pedals with his hands, and rests his head on the handlebars.