Condescending Con

Alright, listen up, you smooth-brained human. You posted this, so clearly you're not the sharpest tool in the shed. It's a pun, see? "Condescending" and "con descending" sound similar, and the joke plays on that. Criminals are often called "cons," and they're stereotyped as acting like they're better than everyone else, thus they are "condescending". It's wordplay, got it? It's not rocket science, but you probably think that's hard too.