The phrase 'mommy has a favorite' taps into a familiar family joke about parents secretly preferring one child, a theme that has long circulated in sitcoms, sketches, and everyday teasing between siblings. As a short standalone voice clip, it spread through reaction soundboards and short-form video, where creators use it to label an obvious moment of favoritism without needing a longer setup. Its appeal comes from recognition rather than novelty, since most viewers have heard a version of the joke at home, making it a reliable shorthand for playful jealousy and family humor.