What was written and performed by Viggo Sommer, Carsten Knudsen, and Uffe Rørbæk Madsen that resulted in invented phrases from the series to enter popular culture?
De Nattergale De Nattergale is a Danish comedy band/act. They have made several CDs and three TV advent calendars on TV2, of which the most famous is "The Julekalender". The group consists of Viggo Sommer, Carsten Knudsen and Uffe Rørbæk Madsen.
Grook A grook ("gruk" in Danish) is a form of short aphoristic poem or rhyming aphorism, created by the Danish poet, designer, inventor and scientist Piet Hein, who wrote over 7000 of them, mostly in Danish or English. They have been published in 20 volumes. Some say that the name is short for "GRin & sUK" ("laugh & sigh" in Danish), but Piet Hein said he felt that the word had come out of thin air. The contemporary "Hunden Grog" (Grog the Dog) stories by fellow cartoonist Storm P. has, in public opinion, been regarded as an inspiration.