Joke
n.
Something said or done to evoke laughter or amusement, especially an amusing story with a punch line.
A mischievous trick; a prank.
An amusing or ludicrous incident or situation.
Informal.
Something not to be taken seriously; a triviality: The accident was no joke.
An object of amusement or laughter; a laughingstock: His loud tie was the joke of the office.
v. joked, jok·ing, jokes
v. intr.
To tell or play jokes; jest.
To speak in fun; be facetious.
v. tr.
To make fun of; tease.
found a cool site:
http://www.aptirrelevance.com/sw-archive/searchresults.php
i dont know if we already know about it though...