Kevinbhai, dummy notes are a regular practice in most OBs. Say you want to take a client to OB for an evening. You go to a bar you are regular at and beforehand deal with the manager that I will pay say 20000 per lac blown on the floor. Thus you may entertain your client and both of you spend say 5 lacs on the floor, you will be billed only 1 lac for the cash. That way, you and your client/friend/boss have a great time and you make a fantastic impression. Also, other mongers in the bar spend more to keep pace. The girls get their share from the 1 lac that you spent and not on the 5lac you threw on the floor. Thus it is a win win situation for all.