HUNTC-558 What?! 80%? What's with this number? A world where the probability of success is visualized and only I can see it! Home drinking edition

My club has a drinking party every month. Usually, it ends up being a house party at someone's place, and sometimes drunk people end up hooking up. However, as an introverted virgin, I have absolutely no such opportunity, and tonight, as usual, I was feeling frustrated, but then I was given some strange alcohol and passed out. Suddenly, I started seeing numbers and percentages above everyone's heads... I guess I should use those numbers as a reference...