Two young boys are climbing over the seat in a vehicle .
It is probable that two boys are moving from the back seat of a car to the front seat after simultaneously calling shotgun .
It is impossible that two boys are moving from the back seat of a car to the front seat after simultaneously calling shotgun .
It is probable that two boys are moving from the back seat of a car to the front seat after simultaneously calling shotgun .
Two boys are moving from the back seat of a car to the front seat after simultaneously calling shotgun .