Only one thing jarred with this otherwise stereotypical Texas scene: Crook was asking Siri, the voice-activated digital personal assistant on his iPhone, rather than, say, a passing sheriff on horseback with a cowboy hat wider than the Buffalo Bayou. But Crook had other questions. He was hungry; heck, so hungry he coulda eaten the north end of a southbound billy goat. She offered a list of 15 restaurants — though not all appeared to serve Texas barbecue. The upshot of this brief and decidedly unscientific experiment is that Siri is at her best when addressed in standard English, with accents toned down and slang avoided where possible.