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1. Being in a state of goofyness where you laugh at your own laugh and anything and everything makes you laugh. Shows up frequently at work.

2. A time where Cassie Syndrome is at its worse.

3.A symptom of Cassie Syndrome.
I was walking around work tonight in circles, not doing anything in particular and someone called me Castarded and I laughed my ass off and got out of work 20 minutes late bacause I was laughing so hard.
by Friend with benefits May 09, 2005
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