Oh the shark has pretty teeth, dear,
And he shows them pearly white.
Just a jack-knife has MacHeath, dea,r
And he keeps it out of sight.

[Und der Haifisch, der had Zähne
Und die trägt er im Gesicht
Und MacHeath, der had ein Messer
Doch das Messer sieht man nicht.]

Bertolt Brecht (1898-1956) German poet, playwright, director, dramaturgist

Die Dreigroschenoper [The Three-Penny Opera], Prologue, “The Ballad of Mackie the Knife” (1928)

English lyrics to "The Ballad of Mack the Knife" (Weill, Kurt / Berthold Brecht / Marc Blitzstein)

Alt: translation: "And the shark he has his teeth and / There they are for all to see / And MacHeath he has his knife but / No one knows where it may be."