Have you ever looked at a rolled metal tape measure and thought it resembled a snail? You can bet that Joseph Herscher did. He's the genius behind Joseph's Machines, the world's funniest chain reaction videos, and you can see a collection of them here. Herscher rounded up a bunch of sneaky snails and rigged them with their own Rube Goldberg contraption designed to fetch a head of lettuce for dinner. Or it might be a cabbage. You may have to watch more than once, as there are plenty of magnets and springs involved, not to mention googly eyes. We hope to see these sneaky snails again! -via Boing Boing