This is something similar to what I used to play in my HS drama class. The idea is, you are given a scenario, then whomever you choose has to respond to it. For example:
Scenario: You are called by a telemarketer, you are an evangelical christian, and they are trying to sell you something completely against your beliefs. ie, sexual services, or something else. What do you say to them?
Response: "Have you found Jesus? Do you know you are sinful? Do you know you are going to hell for selling me this? How much was it again?"
Not the greatest example, but it works. Make sense?
Scenario: You are approached on the street by a prostitute. He (yes he, slash site) offers you 50 dollars/pounds/euros/etc for a blow and 100 for the full package. You have 100 on you. What do you do?