[RndTbl] Funny comment

I had to confirm what $x=!!$y meant in perl. Remarkably, typing !! or "!!" or \!\! into google gives you nothing. Had to use English. Got this: http://stackoverflow.com/questions/2168406/what-does-double-exclamation-poin... The +42 answer is quite good. Exec summary: !! is good for cleaning vars into 1 (true) or '' (false), which is important to keep warnings from complaining about undef vars. Anyhow, read the comments in the +42 answer. Hehehe. Let the flamewars begin!