Okay, so this is a pun based on how the Japanese phrase, if said... badly, sounds vaguely like German.

My German is also terrible, but I took a stab at it regardless.

Basically the German equivalent of the SHOW SEA SEND BANG (shoushi senban) joke.

(And DIE JOB DEATH CAR, SWIM A SEND, ITCHY BUM, etc.)

I guess this is what happens when a German speaks Japanese, I will guess their accent will make others think they're still speaking German lol