This would be translated into English as "lick me in the arse/ass,[4] quickly, quickly!" "Leck mich im Arsch" is a standard vulgarism in German;[5] its closest English counterpart is "Kiss my arse/ass."
A letter of 5 November 1777 to Mozart's cousin Maria Anna Thekla Mozart is an example of Mozart's use of scatology. The German original[2] is in rhymed verse.Well, I wish you good nightBut first shit into your bed and make it burst.Sleep soundly, my loveInto your mouth your arse you'll shove.[3
http://en.wikipedia.org/wiki/Mozart_and_scatology