I didn't realize just how widespread the "two cows" thing was untill now. I read a list years ago , and my favorite was surrealism. I can't find it offhand, so I did a search and came up with this . . .
http://www.thecapitol.net/Recommended/twocows.htm
http://en.wikipedia.org/wiki/You_have_two_cows
Thanks, Sir Lance, for the smiles