Way back when when dinosaurs roamed the earth (well... not THAT long ago, say 1986
) I was in Germany serving in the Air Farce when I turned 21. No big deal since we were already drinking tax free Class VI booze and German beer in massive quantities, but my upper arms were sore after getting tagged 21 times by my buddies in the dorm. And then I felt very little pain, 'cause they proceeded to get me wasted.