Wolfgang Amadeus Mozart had quite the sense of humour and around 1782 composed a canon in B-flat major entitled Leck mich im Arsch (“Lick me in the arse”) which included German lyrics. Sung by six voices as a three-part round, it is thought to be a party piece for his friends. A more idiomatic translation would be “Kiss my arse”, or “Get stuffed”.
The song lyrics include:
Leck mich im A… g’schwindi, g’schwindi!
Leck im A… mich g’schwindi.
Leck mich, leck mich,
which translates into English as “lick me in the arse/ass, quickly, quickly!”