A few years ago, my husband and I ("gringos") were vacationing in Mexico. The first day after picking up our rental car, we drove to the grocery store and got the front bumper caught on an unseen water pipe in a landscape feature. Not knowing why the car wouldn't move, my husband stepped on the gas harder while backing up and the bumper came off!
Two young Mexican men came by and saw our dilemma. They jumped out of their vehicle and offered to help. They borrowed some tools from another Mexican nearby and spent 40 minutes under our car on the pavement, reattaching the bumper. When I tried to give them some pesos, they quickly got back in their car saying, "No, we're your friends!" and off they drove. What a heart-warming experience!