Ok, so i've been kegging for quite some time. However back in my "bottling" days, I always marked on the top of my caps with a Sharpie to indicate the type of beer. However, sometimes I would miss a couple on purpose and put them in the back of the fridge with the other "Mystery Beers". When up to the mood I would pull a "Mystery Beer" out of the fridge. Nothing like a surprise when drinking a beer! Anyone ever do this on purpose?