Top Definition
A Chundersaurus Rex is a person who, after thought of as being able to handle their alcohol, has one spectacularly inebriated night where their inner identity reveals itself and their stomach contents leaves their body with a roar of defiance.

Usually quite quiet until drunk, and the chundering tends to become a habit at inebriated social events involving Jack Daniels.
- 'Look who it is, the Chundersaurus Rex'
- 'Crap, isn't their anyone who didn't hear about that incident?'
- 'At least you're not Captain Jack.'
by 925ale November 28, 2011
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