Authors:

The shortest unit of time in the multiverse is the New York Second, defined as the period of time between the traffic lights turning green and the cab behind you honking.

"Lords and Ladies" by Terry Pratchett, Harper, (p. 282), October 2008.
The shortest unit of time in the multiverse is the New York Second, defined as the period of time between the traffic lights turning green and the cab behind you honking.