t always fascinated me that the C150/152/172/182 would roll AWAY from whichever door was opened ie L roll if the R door is opened & vica versa.
That threw me at first until I realized that with the door being directly under the wing creates a high-pressure zone when opened, not unlike the flaps. Got one hell of an adverse yaw! I wonder if a hand out the other window would be enough to centre the ball...