It is fake, there is actually a journal paper on golf ball deformation: http://www.springerlink.com/content/936p5m7481450164/Also here's a pressure test on a golfball:http://www.youtube.com/watch?v=Uk_rZI9tOFc&feature=related Abusive comment hidden. (Show it anyway.)
Also here's a pressure test on a golfball:
http://www.youtube.com/watch?v=Uk_rZI9tOFc&feature=related