WTF is "Irregardless"

I hate when people say words that don't make sense, like "irregardless". What the hell does that mean? I know what irrespective means. I know what regardless means. I don't know what irregardless means. Probably because it is not a real word. I'm not even a grammar cop. I speak way too much slang for that, but at least the crazy ish I say makes sense to people with the slang decoder ring. No one knows what "irregardless" means, and I don't care if it is in the dictionary. "Ir" means without, and "regardless" means without regard. So when you say "irregardless" what you are really saying is "without without regard." WTF is that? People we can do better. Maybe. . . .