the.com/bundle of joy

means A newborn baby, especially when referred to with sentimental or affectionate flair.

from A 19th-century sentimental coinage, part of a wave of flowery Victorian-era euphemisms for babies ('blessed event,' 'little stranger') born from an era that liked to drape plain biology in soft, cooing language. 'Bundle' nods literally to the swaddled shape of an infant wrapped in blankets, while 'joy' supplies the emotional varnish — together making something that was once fresh and sincere, now so overused it reads as gently ironic.