It took me a very long time to understand the joke.

MACKIEEEEEEEES BACK IN TOWWWWWWNNNNNNNNN!!!!!!!!!!

i assume the joke is that the knife was used in a murder or whatevee

whatever*

Actually the joke is that the knife's name is Mac, a reference to the famous song 'Mack The Knife'.

oh, nice
thanks for the correction

NP!