Last night, I gave a tough Scoutmaster's Minute about pranks. We had 2 incidents occur during the Cub Scout Family Campout and it was time to learn a lesson.
99.9% of pranks are harmful and have no place in Scouting.
The example I used was instead of stealing a poor man's shoes, put a $1.00 in each shoe and hide and watch his expression when he discovers the money.
Think about it this way: If you do something and you think it is funny, will someone else feel good or bad about it?