Driving while leaning back or leaning to the side on the driver's side door or the other way, toward the center console. Only one hand on the wheel, most likely you're left, because your right hand will be changing the radio stations. Also known as sittin sidewayz.
Hey, get your lean on while you drive down the highway listening to Biggie Smalls.
I was driving down the highway gettin my lean on while listening to Biggie Smalls.