Funny True Story
A police officer had a perfect hiding place for watching for speeders. But one day, everyone was under the speed limit, the officer found the problem : a 10 year old boy was standing on the side of the road with a huge hand-painted sign which said "RADAR TRAP AHEAD."
A little more investigative work led the officer to the boy's accomplice, another boy about 100 yards beyond the radar trap with a sign reading "TIPS" & a bucket at his feet full of change.