When somebody's asshole is so loose that when they fart, it makes no noise, instead it releases a puff of air similar to a breath.
The exhale of the butt.
He got sodomized by a pole, now he doesn't fart, he asshales.
When you don't really know what you are talking about, but you feel you have to give an opinion, you are asstalkin'. Sort of like talking without engaging your brain- talking "out your ass." Asstalkin' can defy common sense, or make no sense at all.
When my boyfriend tells me I can drive on tires that are bald, (and I know better), that's asstalkin'!!