Fliptomania Birthday Invasion Flipbook Flip the pages with your thumb -- see a little movie in your hands! A flying saucer birthday cake lands in the desert; Then a little green guy pops out and zaps the entire screen into a "Happy Birthday" greeting! Check out the 4-second video to see the flipbook in action! Flip the pages with your thumb -- see a little movie in your hands! A flying saucer birthday cake lands in the desert; Then a little green guy pops out and zaps the entire screen into a "Happy Birthday" greeting! Check out the 4-second video to see the flipbook in action! Great stocking stuffer! Also available as part of Fliptomania Birthday Flipbook 3-Pack