They say karma is cruel only if you are. A 15 year-old girl, Darby Risner, from Alabama wanted to pull a prank on her friend with a purple dinosaur head. Instead of scaring her friend, she got a scare herself and also got into a sticky situation - literally. The head was too big for the girl and it slipped down to her shoulders, getting her stuck, reported The Telegraph . Her brother responded to the incident by making a Jurassic Park poster out of the incident. Moral of the story? Always buy something in your own size.