The French tried metric time, just after the revolution. It didn't go over so well, especially since people on the metric week got two days off as before--but they worked three more days a week between those days off.
"Now everyone was giving her that kind of look UFOlogists get when they suddenly say, 'Hey, if you shade your eyes you can see it is just a flock of geese after all.'"
"You can't erase icing."
"I can't believe it doesn't work! I found it on the internet, man!"