A joke that works is complete knowledge in a nanosecond.
Source: In The Speaker's Electronic Reference Collection, AApex Software, 1994.
-- Steve Martin, (Aug 14 1945-____), US comedian, actor; His movies have included Roxanne, The Jerk, Dirty Rotten Scoundrels, Father of the Bride, and Simple Twist of Fate. -- EXCUUUUSE ME!