Clunderer
A person who wanders around in a clumsy way.
Brad is such a clunderer. He’s always tripping and never knows where he is going.
clunder
Dried food or used debris usually resulting from dropped food or a spilled bowl that adheres to the cracks and curvatures in a chair and or the in-between area of your car's driver seat and glove box.
I am afraid to reach for the keys that fell out of my pocket in my chair because of all the clunder