The apostillador, also called an afilador in many regions, is the itinerant sharpener who travels streets offering to sharpen knives and scissors. His advertising method was his voice and a small flute or whistle, creating a call that residents learned to recognize from indoors. Recordings of this chant circulate online in Spanish-speaking communities as both a nostalgic document and a meme sound, reused in WhatsApp audios and short videos long after the trade became rare in many cities.