Only way to do that is to use the wrong size. Look at the package. Look at the color. Read the bore size on the package. You can't get a correct snake stuck in a barrel unless you are doing something wrong or you are too weak to pull it through and you only think it's stuck instead of really being stuck.
Bull. I had a brand new (second time being used) boresnake get stuck halfway down my shotgun barrel. As Baylorattorney said, it was hell to remove. A google search of "boresnake," "viper," and "complaints" will yield a bunch of experiences of the "improved" Viper boresnake breaking. A search for the two terms "boresnake" and "stuck" will show many more of the normal boresnakes snapping.