“That’s great poetry,” Moondog says near the end of “The Beach Bum,” delivering a verdict on his own work. A bit later, after a literally explosive bacchanal during which bales of cash and a sailboat ...

Matthew McConaughey is at his dirt bag finest as a good-time Charlie stoner-poet named Moondog in Harmony Korine’s “The Beach Bum,” a bizarre and transfixing carnival of vulgarity and vice. In some ...