Motion Fart - Prank is a free app developed for the Android operating system that lets users prank their friends with motion sensor fart noises. Keep your phone in your pocket with Motion Fart - Prank open and you’ll have loads of laughs with your friends. By lifting your leg or sticking out your waist, the phones motion sensor will pick up your movement and with the volume turned up loud, your friends won’t be able to tell the difference. Great for pranking your unsuspecting friends and family members, Motion Fart - Prank will keep everyone laughing.