Here's one for next year, if you plan ahead now...
Buy a stack of newspapers dated April 1 and save them for a year.
When April 1 comes around again, sneak them into one of those newspaper
vending machines at a location where people will sit and read them
after purchase.
Watch the faces of people read their year-old papers, and when they
realize the date on it!
I thought this one was a good one!lol!