In this age of hyper-planned children's parties, it's not just the kid who pokes his finger in the frosting who has become a party pooper - it's his parents, too.
Occasional etiquette missteps are usually greeted with patience. Busy parents don't expect perfection from one another. But serial offenders have some parents steaming, a situation that puts their kids in an awkward position.
If you're a parent or grandparent who spends time on the preschool party circuit, here are some thoughts from the experts on how best to navigate this social scene.