Lawrence's knee hit him in the back of his neck.

His knees hit the ground with a bang and he bent at the waist.

Her knees hit the surface like a pair of hammerheads.

Her knees hit the ground a second later and got bruised.

The bike has no top tube, so that his knees did not hit the frame.

It pulled him toward the edge, and his knee hit the anchor ring.

It was as though a giant hand were pushing me downward until my knees hit the floor.

A knee hit him under the chin and he sprawled again.

Our knees were hitting those of the people next to us.

Roger's knees hit the floor, and he dragged her down with him.