Biker was traveling the wrong direction on the sidewalk then decided to jump down the curb into the bike lane at the last minute just as I was letting the clutch out. I didn't even use the gas was just letting the clutch out and slowly rolling out so I could see oncoming traffic. It was one of those intersections you have to creep out slowly to see traffic both ways due to the trees blocking your line of sight. She didn't even fall down. I barely tapped her the pedal just tore the shit out of my front bumper.