Many pranks rely on the element of surprise to get laughs, but when humans are surprised they can react in unpredictable ways. When Colorado teen Premila Lal hid in a closet to scare friend Nerrek Galley, she thought she was in for a little bit of fun. But Galley interpreted the strange sounds from the closet as an intruder in his house, pulled out a firearm and shot her. Once he realized what he’d done, he rushed Lal to the hospital but it was too late, and she was pronounced dead on the scene. Galley was not charged in the incident.