A treat where you take perfectly good Gummie Bears and wipe them all up the anus region as if they were toilet paper.
In order for it to work well, there should not be poop stains on any, or the camp counselors might notice. Just the fact they've been up in there is nasty enough, trust me.
At a percussion camp, our school's drumline make a huge Ziploc bag of Grundle Bears that the college counselors snacked down. Yummy.