Top Definition
a bitchy ass person who never shuts the fuck up. these people deserve to have there teeth glued together, lips sewn shut, and have a sliver of duct tape to top it all off. they piss off anyone and everyone they come into contact with.
"god, that new girl may be hot but she is SUCH a nimyo!"
"shut the fuck up nimyo!"
by SHUTUPALREADY April 29, 2010

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