Lady Drinks are the term used to define a special drink you can buy at beer bars and gogo bars in Thailand
A Lady Drink costs more than your own drink, and is considered like a tip or incentive the girl receives. A portion of the paid amount is for the girl and the rest goes to the business.
Usually the bar girl will sit with you and interact with you when you buy her a Lady Drink.
You do not have to buy girls Lady Drinks, only do so if you want to know her more or like her and want to show her.
In Thailand Lady drinks can range from 120 baht-200 baht