Top Definition
1. A mythical creature, said to be so large that if it fails it will cause the destruction of the entire universe

2. A person who is in a constant state of failure. Because their failure radius is so large, they are called a Failosaur.
kid 1: Hey guys, watch me!
kid 2: God, you are such a Failosaur
by Adsy101.1 October 14, 2009
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