"The Smallest Man Who Ever Lived" is a song by the American singer-songwriter Taylor Swift from her eleventh studio album, The Tortured Poets Department (2024). She wrote and produced it with Aaron Dessner. Described as a breakup song and a diss track, it begins as a simplistic piano ballad that features blinking programming before assuming a rock sound with distorted vocals in the bridge. The lyrics describe a man who flaunts the narrator then ghosts her and attempts to buy drugs from her acquaintance.