Last one up, that can't fall asleep due to excitement from socializing. Being hushed only encourages uncontrollable laughter.
Can Also Be: Phenomenon when you are still awake and uncontrollably laughing in a social situation where you're supposed to be asleep.
Blue was suffering from slumberparty syndrome as she couldn't stop uncontrollably laughing hyena style, as everyone else is passed the fuck out.
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