This guy in your gif has been discussed at LPSG many times, i dont remember his name but i am sure another member will point it out, there is talk about this guy on multiple threads.
Theres a measuring photograph of him with a ruler and he wasn't 9 from the side. Hes easily over 8 but he isn't over 9 long properly measured. In regard to big dick gifs, most of them have the aspect ratio stretched. some of these huge cock guys look really impressive but when they measure up they are nowhere near 10.