Are you having sometime a nice evening outside with friends ? Have you ever thought about making a prank to scare them ? Scarymote is THE tool for this. Select a sound that will grab your friends attention, select a timer up to 20 minutes then hide your smart phone or tablet in the darkest place around. When the timer ends, the sound you selected will be played, then a video of a crazy ghost eyes on a dark background. It looks realistic and completly crazy, good luck to your friends underwears...
To make it successfull :
And what about shooting the whole scene with a camera to make a great souvenir ?