when a friend or someone you walkin next to on a sidewalk is takin up all the room. leavin you wit just a lil bit of sidewalk to walk on.
or
when theres too many people in a row on the sidewalk & they left you out walkin on the grass or the road.
"dawg, scoot tha hell ova, i need some sidewalk space"
"haha we done left that nigga wit no sidewalk space"