A song by the german new wave band "Falco". Also, a very well known term at the time for cocaine... which is what the song is supposed to be about secretly.
new wave raver: "Dude, have you heard that song by Falco 'Der Kommissar's in Town'?"
-or-
cokehead: "Dude, Der Kommissar's in town, bust out your coke straws!!! AHHHHHHHHHH!"