Sounds like DEATH!
Literally sounds like DEATH. Best pranking device ever, don't scare your grandma because this seriously might kill her. Sounds like a soul burning in hell, screaming at the top of it's fiery lungs for help that will never come. Tip: have your jaw opened up as much as you can when blowing on the whistle. The whistle utilizes your mouth as a sound chamber, the larger the sound chamber the more wicked it sounds.
Rating: 5 stars