Settlers of Catan, with Stakes

"Ok, I think Settlers of Catan will be a good game to start off with," you say, "But I wanted to make it a bit interesting. How about every time you get a point, you can choose someone at the table to take a drink, but the same person can't take a drink twice in a row and each time you have to choose somebody different from your last choice."

"I don't know if Emma has really had much to drink, she's still in high school," Sabrina protests.

"It's ok Sabrina, I can handle myself and if I'm going to college next year I might as well get some practice with you two around," Emma argues, unaware of the situation she's going to find herself in.

The sisters argue for a bit longer but you insist on including Emma in the drinking game and head over to pour them some wine, while you grab a beer.

Fortunately all of them happen to know the rules, and the game starts without much ado. Soon each of them has finished their first glass and you're pouring them a second one. The game ends quickly, you win with Sabrina in second and Emma and Katherine struggling in a distant third and fourth. At this point, all the girls have had enough drinks to be substantially drunk, inhibitions lowered. This is especially true for Emma given her low tolerance to start.

Now onto the next stage of your plan.