question of the day: one leg on the bus, one on the street how long you can manage?

they say it's not possible to be on the bus and off the bus at the same time. Incorrect.

one leg can be inside while another remains on the street.

and.. while bus is not moving, or moving slowly, you can even manage to stay on the both sides..

but seems my "bus" is moving fast. moving in all directions. and sooner or later i will have to choose - ON or OFF...