This tight fitting pot lid uses the expanding steam from cooking to propel a miniature roller coaster on its slow upward journey.
The cars racing around the track indicate that it is time to turn down the heat before a boil over.
-- 2 fries shy of a happy meal, Jun 14 2013

Pots and puns.
-- MaxwellBuchanan, Jun 14 2013



random, halfbakery