The poop was made up of chunky peanut butter and fudge.
The bare butt seen outside the store scene is that of the Director, Kevin Snyder. He was the stand-in for Matthew Corbett Davis.
Dan Bartolucci broke his collar bone on camera, doing somersaults in the Lake Hollywood Park scene. This shot was captured in one take, and used in the film. He was rushed to the closest hospital immediately after the accident.