WIKIPEDIA:

“ Dieter Nuhr (born October 29, 1960 in Wesel, North Rhine-Westphalia) is a German comedian. From 1981 to 1989, Nuhr studied art and history at the Folkwang Hochschule in Essen. From 1982 to 1987 he attended the University of Duisburg-Essen, where he studied to become a teacher. As of 2010, Nuhr lives in Ratingen, North Rhine-Westphalia.
From 1982 to 1992, he was an active artist, and several of his works were exhibited in the Rhineland. In 1987 he appeared for the first time as a cabarettist, and in 1992 he arranged his first solo stage program. He has since gained notoriety for his numerous television appearances on Quatsch Comedy Club (Channel Pro7) and 7 Tage, 7 Köpfe (lit. 7 days, 7 heads), Channel RTL.
Nuhr is regarded as a mediator between classical comedy and intelligent Stand-up comedy. In his work, he gives a critical glance to social behaviour in society and media, often satirising relationships and families. Nuhr has also been known to caricature the typical German know-it-all. A typical example is his famous saying that is frequently quoted in forums and Newsgroups due to its very provocative nature: "Wenn man keine Ahnung hat: Einfach mal Fresse halten," which translates to, "If [......] ”

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