A neutron walks into a bar and orders a beer. 
"How much?", he asks the bartender. 
"For you, no charge".


http://forum.ogrish.com/showthread.php?t=77392

http://forum.pcgamer.se/viewtopic.php?t=41792&postdays=0&postorder=asc&start=200

http://home.swipnet.se/ralorpa/