The average circumference of an adult mans head is 22 inches. When you see bodybuilders claiming to have 22" arms, compare their arms to their head if a photo of them is available. That gives you a good idea whether or not the person is full of shit or not. There's a small handful of bodybuilders that can actually pass this test. Ronnie, Dillet to name a couple. These guys have legit 22" arms. Even though the OP's head isn't showing in the photo for comparison purposes, I can pretty easily tell they're not 22".