Vanity plates let you have some fun.
Here's one I spotted on the 401 the other day. Wisdom for the ages, young and old:
And here's one I first saw with my own four eyes many years ago on a Jaguar XJ-S Convertible in Yorkville. It subsequently showed up in a mass e-mail transmission on a Porsche Boxster. Presumably she traded the Jag in on the Porker.
Please send me your favourites.