Top Definition
A stupid or pathetic fail that makes you appear retarded. Normaly done by mongs.
person 1 - "I just fell up the stairs"

Person 2 - " aww no,why did you do that!?"

Person 1 - " I don't know,I must have done a Mongy Hannah"
by Mongy Hannah April 28, 2009
5 Words related to Mongy Hannah

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