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!"