Wikipedia’s list of confidence tricks is a globe-spanning journey through con-jobs ancient and modern. Required and fascinating reading:
A clip joint or fleshpot is an establishment, usually a strip club or entertainment bar, typically one claiming to offer adult entertainment or bottle service, in which customers are tricked into paying money and receive poor, or no, goods or services in return. Typically, clip joints suggest the possibility of sex, charge excessively high prices for watered-down drinks, then eject customers when they become unwilling or unable to spend more money. The product or service may be illicit, offering the victim no recourse through official or legal channels.
The Melon Drop is a scam in which the scammer will intentionally bump into the mark and drop a package containing (already broken) glass. He will blame the damage on the clumsiness of the mark, and demand money in compensation. This con arose when artists discovered that the Japanese paid large sums of money for watermelons. The scammer would go to a supermarket to buy a cheap watermelon, then bump into a Japanese tourist and set a high price.