(Kelly of the Clue Crew demonstrates with a coffee can & an inclined plane.)  A ball of clay inside the can is enough to reposition the can's natural center of this, so the can rolls uphill
pronto a samozejm ... 
as luck would have it a tak dl and so on a tak dle and stuff ...... bubnovn 
drumbeat bubnovn (2) drumming bubny cans bubny (2) drums bubk bogy .... (
9) scrumptious bjeslov mythology bjit fable bjn fabulous bl ball bl se was