1. You always want them to deploy first.
2. Watch very carefully as they place their unpainted grey plastic models that they lovingly purchased with visions of being an elite 40K GT player. The kind of satisfaction that can only be had by buying victories and proving that at last you are a real man.
3. Once they have fully deployed ask them if they are fully deployed.
4. If the answer is yes.
5. Tell them that you have decided not to play and then sit down and watch him put his models up and grumble.
You have just out douched the douche bag, you win!