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2. The Shrimp Scent Surprise – “What’s That Smell?”

Did you know that you can buy “shrimp essence” in cans? No? Well, now you do—and your enemies (or unlucky roommates) will soon find out too. Just a few spritzes in their room, car, or gym bag, and they’ll be wondering if something crawled in and died. The best part? It takes ages to figure out where the smell is coming from.
Pro tip: Do NOT prank yourself in the process. This stuff is powerful.