The crossing of a monkey and penguin as designed in the comics strip created by two geniuses in Washington Township, Michigan. Not to be confused with a mongoose, because whoever made that up is not paying attention obviously.
Also an aol screen name.
The combination of a monkey and a penguin. A true menguin is fluent in English, Japanese, and his or her native tongue of menguinese. They often go on inter-planetary rock tours with the band two purple phish