Have to say that I choose above average but in the UK, we still use the Imperial system mainly for height. I am 5 foot, 10 inches., 22 years old.
I am the smallest male member of my family (got my mother's smurf genes unfortuently). Apart from me, the next smallest person is 6 foot, 2 inches, my younger brother. After that, the uncles, cousins, brothers and father all range between 6 foot, 3 inches and 6 foot, 10 inches.
Hard being the runt sometimes but not all is lost, the L theory seems to hold true