Thanks to Marco Arment for this one:
(…) The standard American way to heat water is to take a pot of water out to our pickup truck, open the hood (what the Brits call a “spanner”), and lock the pot onto the engine block using a set of latches readily available at any Wal-Mart. Then we drive around at high speed, reciting the Gospels and firing our shotguns out the window. After reading the Gospel of John for three minutes and sixteen seconds, the water is ready. I hope this puts to rest any confusion.
Dr. Drang on blog comments.