Even though I'm stuck 6,000 miles away from Thailand. The quest for knowledge goes on ! I was chatting to a girl on msn who was telling me that you can say -
chai mai ? isn't that right
In the two following ways as well -
chai pa ?
chai dee ?
No doubt this will involve saying each phrase three of four times with varying tones and emphasising different parts of them before being understood. Shes from BKK so this isn't some Issan/ Laos chat in case you wondered.