I'm addicted to this stuff.
I had my first double when I was 16. There were five of us that night on the town. I didn't think much of it then, but two years later I had another double, and then another the following year.
That was when I first realized I might have a problem. I cut it off cold-turkey for the next 3 years, but then it came back with a vengeance. I had a double, then the next year I had a triple. The year after that I had three doubles in a row!
I slowed down a bit after that; only one double a year for the next two years, and then a long dry spell. I only cheated once until I was 38.
Then I fell hard. I had two doubles that year, followed by a double and a triple the next year, then two doubles and a triple. I just had my first quadruple, and I don't know what I'm going to have next year.