Joker Fart Whistle Naughty Noise Maker 4.5" Prank Toy, Blue Pink Give your friends a laugh with this funny fart whistle Easy to use, just blow in the tube If it fails to work, blow into the tube while pressing your finger & thumb along the seam of the fart whistle Sounds just like a whoopie cushion A great stocking stuffer for your little prankster