Is like saying that the
son of god is a shit. Actually the meaning is (Shit Jesus or Jesus is shit). Maybe not
one of the most used ones but i swear that is a
good and proper way to esclamate when something bad happens. Examples.
Apri la finestra che c'è puzza Gesù merda. (Open
the windows that the rooms stinks Jesus merda).
Stai zitto testa de cazzo che hai rotto lo schermo Gesù merda. (Shut up
dickhead, you broke the screen Jesus merda).