Download links below.
Well, what exactly is flapping brontosaurus?
Warning: Its not exactly safe for work!!! So you will need to click on more info to see the screenshots.
Essentially it is this : It is a brontosaurus in a field eating grass. You shake the device really fast to break him and beat the game. And if you find the game too easy, touch the screen to turn off the lights and only shake his shadow!
This is one of those apps you want to install on your friends phone and leave it their for them to find it.
BlackBerry 10: Sideload it from here
Android: Sideload it from here