the.com/apron strings

The umbilical cord's clingy cousin, cut decades late and still twitching.

means Used to describe someone who remains excessively dependent on or controlled by a parent (usually the mother), long past the age when that should be happening.

from The phrase comes from the literal apron strings tied around a woman's waist — a garment so associated with wives and mothers that by the 1500s–1600s 'to be tied to someone's apron strings' became shorthand for being under a woman's control or care. There was even an old legal term, 'apron-string tenure,' referring to property a man held only through his wife's rights — his claim to it hung, quite literally, on her apron strings. The image stuck long after the garment itself faded from daily wear.

origin
18th century term for maternal control over grown sons
phrase
tied to apron strings means still dependent emotionally or financially
irony
aprons were practical garments, not metaphors for control
usage
almost always aimed at men, rarely at daughters
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