Or, even better, just learn the bloody language already. It's not just Americans, though. Terry Pratchett often uses incorrect Latin in his books, though generally it's done well enough so that most people don't notice (besides, the jokes are funnier that way).

And by the way, what Pharaoh was it? A late Ptolemaic one might have known Latin much better than Egyptian. Besides, waking from the dead after several thousand years and screaming out a monosyllabic 't!' (or even the full phrase 'rdi//s t') just doesn't sound as nice.