The famous shape was born thanks to a particular
anecdote. At the end of 19th “Scugnizzi” picked up
“minuzzaglia” (rests of pasta fallen during the drying
along the streets) from the floor.
Sometimes they tried to keep them and when the owner of the pasta factory noticed it he punished them with a slap.
Slap in Neapolitan dialect is called “pacchero”.