Comes from the movie "Treasure of the Sierra Madre", 1948, starring
Humphrey Bogart. Bogie and two other Norteamericanos are
looking for gold in Mexico. Banditos come to the campsite and identify themselves as Federales.
"If you guys are the Federales, then where are your badges?"
"¿Badges? ¡We
don't need no stinking badges!"