Sunday Rest: quad bike.

 Look, bike is short for bicycle, yes? And the the word bicycle basically comes from two bits of some ancient languages, one bit meaning two and the other meaning wheel, right?

So how many wheels does a quad bike have, then?

Honestly. Some people have no logic at all...

photo by Peter Ellis

Compound Noun Not To Use Today: quad bike. The Latin bis means twice; the Greek kuklos means wheel. The Latin quadrangulum means having four corners.