Metaphors, industry expectations, predictions of its demise – they all disappear into the deep fryer when it comes to Casa Bonita. There are plenty of reasons why the beloved, Mexican “eater-tainment” concept is celebrating nearly a half-century of sopapillas, cliff-divers and surreal childhood memories in the west Denver suburb of Lakewood. It’s the last of its chain, which once included outposts in Oklahoma and Arkansas.