Michael: These signs are located in the North of Bogotá around the area of Calle 140 and Avenida 19. The first sign caught me by surprise, and indeed a smile came to my face. But with the second one my thought process went to who is doing this. The added letters are vinyl and close to the same font as the sign.
Graciela: The first says “Stop and smile.” The second is “Stop and shout.” We have not found any more in the city beyond those two.