The Decline of Language

Today after I finished walking, I came across some graffiti painted on the ground. The message said, "You ant shit to me bitch." I walked away pondering why the person who wrote this would call someone "ant shit". I mean all animals and insects poop. I couldn't figure out what was so special about ant feces that someone would use it as an insult? Then I realized what the person meant, he meant to write "ain't shit". I guess that it's just another sign of the times. Am not became ain't and ain't has become ant.