"Engilsh", but still, it's not their native tongue. I will try to get a picture of that sign too, because it's deserving of my "Only in Thailand" album.
It does become very funny, when the typos are in Thai - and it is so obvious that even I can spot it. I can not write Thai to save my life, and I can only read it a little; don't ask me to read a newspaper for example.
Let's say, you're in the market for a house that costs about 1 to 2 million baht. Let's say, you can read Thai - hey, in this part of the world, it's not an exception. Then you spot this sign...
For those of you who can not read Thai, this sign advertises a house that has "4 BERROOMS".
Would you go over and buy the house? They can't write their own language; why would they be able to build a good house?
This picture can also be found in my Only in Thailand album.