The median number of legs for a human being is 2. The average is slightly less. So most people have an above average number of legs.
But also, footprints with just four toes could also be because of one of the toes not carrying enough weight to make a legible print.
[ 1, 2, 2, 2, 2, 2, 2, 2, 2 ]
^^^
The median selects the most 'middling' result, it's like the mode (the majority) except sorted and middled: if you had ~as many people with 0 as 2 legs (bimodal), then you'd end up with a median of 1.
The median number of testicles in humans is 2. The mean is slightly over 1.
Person #4,000,000,000 has 2 legs.
The Riddle of the Sphinx begs to differ.