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So large that it can not be discribed as any other word.

There is a gigunguse storm heading our way.
by mike January 15, 2003
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2
Often used to describe something that is so large it is not fathomable unless it directly experienced.
Black women only have two types of teeters; they're either really small misquito bites, or they are Gigungus tits, that make you lean back in your chair when a girl walks in the room.
by Super October 31, 2004
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