German astronaut Alexander Gerst shaved-off his USA colleagues Gregory Wiseman and Stephen Swanson working with him onboard the International Space Station. The astronauts made a bet whether USA team could fight off the German one at the World Football Championship and the Americans lost it.
According to the terms of the bet in case USA team have won Gerst would have to paint the American flag on his bald head. If it was the Germany to win, both NASA astronaut had to shave their hair off.
Football match took place in Recife city at Pernambuco stadium, Germany won with a score 1:0.