In Germany, for a hat-trick to be considered genuine, all three goals must be scored in the same half, and without any other goals interrupting yours. It's known as a 'lupenreiner', which translates roughly as 'pure', but that's slightly different from a 'perfect hat-trick'. A perfect hat-trick requires one goal with the right foot, one with the left foot, and one with the head. This showcases the player's versatility and skill in football.