It's April Fool's Day. Last night we were listening to "A Prairie Home Companion" and Garrison Keilor pointed out that April Fool's on a Sunday, particularly Palm Sunday, just doesn't lend itself to good pranking. And he's right. Even my husband, the king of April Fools (he even put out an April 1 edition of the Farragut Admiral at Farragut HS in Chicago), is laying low today. But a year from now? Look out!