Poll Results

Total votes: 1064

Sawàt-dii khâ.: 264 (24.8%)
Er, yes, with rice please.: 255 (24.0%)
DO... YOU... SPEAK... ENGLISH?!: 210 (19.7%)
Hey, if English was good enough for Jesus, it's good enough for me.: 168 (15.8%)
Sawàt-dii khráp.: 167 (15.7%)

Yes, I'm back from my trip to Thailand, where I used this phrase a lot to greet people. The correct response is either Sawàt-dii khráp (if you are male) or Sawàt-dii khâ (if you are female).

So from these results I conclude that most of my readers are female. Or don't know Thai.