The etiquette of bribery.
"The Economist" has a free article on the etiquette of bribery.
Anyone who has given, or been around the greasing of palms, has noticed that the cash is not usually given to the corrupt official, or a person with the upper hand, like one would pay a salesperson at a cash register. There is usually a special language indicating that a bribe is needed, and an etiquette of the way to transfer the money. In Armenia, sometimes we are told that 'lavoutyoun' (an act of kindness) or 'magharich' (a tip) is needed. In case of the traffic police, the communication is non-verbal. When you are stopped, you know what to do.
Here is an excerpt from the article describing a newbie asking for a bribe in Georgia - obviously, he needed some experience.
A sweetener to a traffic cop is often placed in the ticket-book that is handed to the driver. Parag Khanna, who is writing a book about countries on the edge of the rich world that are trying to get rich themselves, describes a bribe-taker he spotted in Georgia who he was sure was a rookie. Why? The scrawny young soldier, forgoing any subtleties, merely rubbed his fingers together in an age-old gesture.
There is also a description of corruption in the US as well - the fees paid to journalists by the government to produce favorable news, the donations by the lobbying organizations to lawmakers, tips paid to personnel at restaurants to get a table without waiting. As a matter of fact, bribery is institutionalized in the restaurant industry. It is necessary to pay a tip to the waiting staff. Otherwise they may spit in your food the next time.
