toothing

Noun

 * 1) The act or process of indenting or furnishing with teeth.
 * 2)  Bricks alternately projecting at the end of a wall, in order to be bonded into a continuation of it when the remainder is carried up.
 * 3) A hoax claim that Bluetooth-enabled mobile phones or PDAs were being used to arrange random sexual encounters, perpetrated as a prank to "highlight how journalists are happy to believe something is true without necessarily checking the facts".