On a busy avenue in Olinda, in northeastern Brazil, two men in wigs, big red noses and full clown makeup are squeaking horns and making a good-natured ruckus.
"Where's your helmet?" shouts one as a motorcyclist whizzes by. "Fasten your seat belt!" calls out the other.
Uncle Honk and Fom Fom are traffic clowns, or palhacos, hired by the city to make the roads a bit safer. They lean into traffic, making exaggerated gestures, like the sweep of the arm to mimic fastening a seat belt, and a mimed reminder to never drink and drive.