There's a major drawback to this trick: the perp suffers along with everybody else--but early risers should find it's worth the lost sleep. Barry sprang this one on his kids last April after they switched his sugar for salt the year before. "I knew the kids would be expecting something," says Barry, "so here is what I did. As usual, we got the three children up for school. My wife and I were all ready for work. The kids were a little slow getting dressed, but they all made it to the breakfast table in time to eat--at least according to the clock. When breakfast was over, I asked my daughter to open the patio curtains, and when she did, her brothers and she saw a large sign that read, 'It's 3 A.M.—April Fool!'"