Sometimes it can be difficult to understand the Thai language and some Thai girls do not have the proper education to understand English to 100 %.
When you go back to your country you might want to send your favorite bar girl some SMS but the problem is that she hardly understand what you write most of the time. She might let a friend read it or answer something totally wrong.
All that can be fixed with the help of SMS Thailand, they send translated SMS to Thailand for almost the same cost as you send them from your own phone.
They have a promotion until the 14 April that gives you 100 free SMS if you buy 100 try it out before it is too late.
The link is here SMS Thailand