Doesn't Wikipedia cover it? [ame=http://en.wikipedia.org/wiki/Principle_of_relativity]Principle of relativity - Wikipedia, the free encyclopedia[/ame]
Wouldn't you think a 3rd or 4th cousin who years ago, offed several members of his family by giving them insulin and then collecting their insurance money, was just a wee bit wacky?
Could Tony Soprano be considered wacky? Which just leads to more questions, doesn't it? Did Tony get wacked at the end? Do you call the person doing the wacking the wacker or the wacky?