Since April Fool’s Day traditionally ends at noon on 1st April, I can now reveal all (with apologies if that implants a disturbing image in anyone’s mind). The tradition treasured by children and adults alike involves playing tricks on a victim and shouting “April Fool.” Even the country’s media are complicit. In the 50s/60s ? Panorama, a heavyweight weekly current affairs TV programme, ran an article on Italy’s spaghetti tree! Thousand, maybe millions of viewers were taken in.
Within families a much-loved trick is for a child to remove carefully the top of a boiled egg and consume the contents. He/she then inverts it and puts secretly in an egg cup. Daddy (who is normally the most intellectually limited member of the family) approaches the egg with loud anticipation and with exaggerated flourish strikes the egg with his spoon only to find it empty much to the glee of the children. Daddy is so twp that he falls for the the same trick year after year.
Here is a Wiki article on how and where April Fool’s Day / All Fool’s Day is celebrated in the rest of the world.
April Fool’s Wiki