Yesterday I noted that Canada should ban knives, forks, rubber bands, paper clips, and baseball bats. Perhaps I should have added a few things to the list.

Sure, you can ban them, register them, and make them idiot proof, but nature will adapt and overcome. In Germany, Reuters notes that they have built a better idiot.

BERLIN (Reuters) - German police have arrested a man for firing potatoes at passers-by with a home-made bazooka, authorities in the western city of Essen said on Friday. [...]

Police said the weapon consisted of about five feet of drainpipe attached to an aerosol can which the man ignited to propel the root vegetables toward their targets.

Considering just about anything can be used as a weapon, banning them never works.