Hi, in a thread about the Corsair in Off Topic some months ago various WWII aircraft nicknames and their origins were discussed.
One that was thought to have been invented by US propaganda was "Gabelschwanzteufel"
(Pitch-forked devil) for the P-38 Lightning, wich makes it more impressive than it actually was, at least in Europe. Galland in his memories said it was not a serious contender, and that the only plane the Germans hated was the P51 Mustang because it could do everything, only better.
But I digress, that nickname was never used by German pilots, but talking with a German friend about this, he told me that his grandpa, a Fallschirmjäger
in WWII who served in the Mediterranean, knew that term, it was coined by the Frontschweine
(or Poor Bloody Infantry) after coming under the attention of the P-38 Jabos
and was presumably picked up by Allied propaganda after the interrogation of German prisoners.
And now, I better book an appointment with an exorcist because I am speaking in strange tongues