Appsolutely Stupid: Door Stop The Joker July 23, 2014 LOL/SMH/WTF No matter how old I get I still laugh when I hear that nostalgic sound of a door stop going crazy. What better way to relive your joyous childhood than have the hilarious sound of a door stop right in the palm of your hand? With Door Stop by Motion 9 Studios LLC, you can hear that hilarious “booiinnngggg” all day every day! Download it for free in the App Store. Leave a Reply Cancel Reply You must be logged in to post a comment.