Severed head blowjob scene?

from when i first saw the movie i remember a scene where the guy pleasures himself with a severed head in a car and throws the head away. there's a hommage of that scene in the french film "high tension".
i just rewatched "maniac" on netflix and the scene was missing. so my question is, was it a cut version? (even though i've read it was supposed to be uncut on netflix)
or did my memory betray me and that scene was actually from another 80s slasher?