Marine and Boating

when i was a little girl i was taught a trick having to do with boy scouts. you take a piece of regular paper and fold it into shapes that go along with a story of a group of boy scouts who go to camp and eventually die in a boating accident. by the end of the trick the paper has been torn into the shape of a little white t-shirt (which is what the rescue team finds). very odd trick, i know. my children are now in their late teens and early 20’s, but they still make me do the trick for their friends. it’s a big hit. i know i didn’t make this up. i’m simply not that clever. does anyone else know this trick? where did it come from?
my family is very interested to know.