An American, A german, and Russian are at a strength competition
The competition is Hammering a nail into a piece of 4x4 plywood with their head.
The American, a 250 pound beast, holds numerous records in strength. The German, and 350 pound monster, almost 7 feet tall, is renowned as the most masculine man on earth. The Russian, a scrawny, 80 pound man, no records, no interests, he exists as a regular man.
The American is up first, takes a nail the size of an index finger and hits it twice with his head, BOOM BOOM, successfully forcing the nail all the way down.
The German is up next, takes a nail the size of a water bottle, hits it once, BAM, successfully penetrating the nail through the plywood.
The Russian is up next, takes the smallest nail there is, hits it 10 times, BAP BAP BAP BAP BAP BAP BAP BAP BAP BAP....
Gets the nail in.
The judges are now calculating who is the winner. After some time, the Judges come to the conclusion that the Russian won.
Everyone was confused, "why?" asks the German, "He took the smallest nail and had to hit it 10 times! I took the biggest and hit it just once!"
"Because" said the judge. "He had the nail upside down..."