Cheap Charlie
If you haven't been called a 'CC' at least once on a trip you're doing something wrong. If a bargirl calls you it say; 'yes I am, thank you very much', and give her a big smile because she has just paid you a very big compliment.
Is Stick patting himself on the back again?
Gem scam
This scam is rife in Bangkok, particularly around tourist attractions like the royal palace. A friendly chap approaches and informs you that the venue you want to visit is closed for a holiday or some such. However, joy of joys, he has a profitable way to kill the time. A gem shop has an offer that means that the stones you buy in Thailand can be sold back home for many times their worth! Back home the hapless tourist finds out that the stones he bought are low quality and worth nothing like promised. This scam is a big money earner, and as Thailand has virtually no consumer protection laws to speak of, there is no redress.
Not always true.
A, er, hmm ... mate of mine fell for this about 20 years back. Got the rocks sent back from Oz after getting laughed out of the dealer's shop and managed to get 80 percent of his "investment" back from the coonts with help from the BIB.