Romper – Danielle Braff
Sometimes the toddler who won’t put on their shoes isn’t in the throes of a tantrum — rather, their limp body might have fallen victim to the tantrum’s shadow brother: the giggle fit, rendering them incapable of functioning, even if they wanted to. It typically starts with a shy smile, and maybe a trigger word (“poop”), followed by a few small hints of a giggle before things transform into full-blown hysterics — cackling, involuntary farts, loss of voice, happy tears, and finally the toddler in a mushy pile on the floor, exhausted and out of breath from his efforts.
https://www.romper.com/p/the-science-of-the-giggle-fit-19768625