Linguistic memes as units of social and cultural evolution spread and replicate constantly in the direction of vertical and horizontal dimensional. Because of lack of linguistic signs and culture and for some psychological reasons, German has taken a large number of foreign memes in the process of its formation and development. These foreign words compete with German words and phrases according to the natural selection. This paper found that unique, professional, distinctive, economical and stylish words are more likely to become strong memes, which can be a powerful explanation of the role foreign words play in German.