It's a good thing they're cute...
Mommy [cooing, while carrying just-fed, happy and bright-eyed baby down the hall to be changed]: You're the sweetest baby, aren't you? Just the nicest, cuddliest--
Baby: *barfs straight down the neck of Mommy's pyjama top*
Mommy [freezing in horror]: AAAARRRRGGHHH!!!
Baby: *smiles angelically*