Someone who is so witty and clever, that he/she does not realize how witty and clever he/she is. Everything that comes out of this person's mouth is gold, hence the silver in the name, which derives from quicksilver.
Silverlight is shit plugin for browsers so that web developers can code in a crap pointless language, worse then the brilliant language currently used, JavaScript. The only reason why anyone would ever use it is to install viruses (just like Microsofts activeX).
When engaging in the act of sexual intercourse from behind whilst wearing an eye patch and parrot on the shoulder (with a cutlass also). Extra point are awarded for shouting "Arr!" and "I found yer treasure me harty!" upon climaxing.