This game may or may not pan out. What you do is if you try something for the first time, sexual or not, you say "I lost my ___ virginity," referring to the new experience. I'll start with a couple fo examples:
I lost my Twinkie virginity (had my first Twinkie) and my sushi virginity (had my first sushi) this month. And last night, I lost my mushroom ravioli virginity.