Top Definition
A person who is 12.5 percent god. Most Half Demisemi gods don't even know they are in fact a Half Demisemi god cause no one gives a shit if you are even a Demi God.
The Half Demisemi God in my History Class still managed to get detention 3 times a week and pull out of the class with a D-.
by Whitem@il August 06, 2011

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