Yes you heard me right... via Neatorama.
Lick me in the ass!Words straight from the most accurate source evah!, Wikipedia.
Let us be glad!
Grumbling is in vain!
Growling, droning is in vain,
is the true cross of the life.
Thus let us be glad and merry!
Lick Me in the Ass (German: Leck mich im Arsch) is a canon in B-flat major composed by Wolfgang Amadeus Mozart, K231 (K382c), with lyrics in German. It was one of a set of at least six canons probably written in Vienna in 1782. Sung by six voices as a three-part round, it is thought to be a party piece for his friends.
The song's title and lyrics are a reference to anal-oral contact, and have been used as evidence to support the contention that Mozart suffered from Tourette's syndrome, but are perhaps better translated as "kiss my ass" or "get stuffed".
Mozart's widow, Constanze Mozart, sent the manuscripts of the canons to publishers Breitkopf & Härtel in 1799, saying that they would need to be adapted for publication. The publisher changed the scatological titles and lyrics to the more acceptable - and saleable - "Laßt froh uns sein" ("Let us be glad!"). The original, unbowdlerized manuscript and lyrics were discovered in 1991, with the manuscript for another Mozart work, "Leck mir den Arsch fein recht schön sauber" ("Lick me in the arse nice and clean", K233; K382d in the revised numbering), although later research has indicated that the latter composition is probably the work of Wenzel Trnka (1739-1791).