"Manchild" is a song by American singer Sabrina Carpenter and the lead single from her upcoming seventh studio album Man's Best Friend. Carpenter co-wrote the song alongside Jack Antonoff and Amy Allen, and it was produced by Carpenter and Antonoff. It was released on June 5, 2025, through Island Records. The accompanying music video was released on June 6. The song was described as a country-influenced pop and synth-pop track with a disco-like energy. Lyrically, it humorously critiques an immature ex-boyfriend over upbeat melodies. From Wikipedia