Skyhook, you, and your prank cohort, get on either side of the target, and each grab a hold of the targets skivvies.
You then haul them into the air by their skivvies as quickly as you can.
Then run like heck.
There was also the Fort Knox Gift, a present wrapped in such a way as to be almost impregnable.
Wedgies! LOL! Fort Knox gift? How can it wrapped to be almost impregnable? Lots of tape? Duct tape? LOL