Top definition
A merger of the two words "man" and "stupidity" to account for the idiotic things men do, or things men believe to be cool just because they are men. Not to be confused with youthful folly or inexeperience. Manpidity can never be outgrown.
The reason your boyfriend thinks riding a skateboard off the roof of the house into the pool below is not because he is thirteen, but because of his manpidity.
by tabcola June 19, 2011
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