A person who does a lot of talking but never says anything. While this occurs their jaw flaps closely resembling that of a Muppet. In some cases the person in question may even resemble a Muppet or Sesame Street character.
That fool Kevin keeps flapping his jaw, he's a real muppethead.
by S.H. Eldredge February 24, 2008
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1. The term for an adorable girl you meet at large scale festival such as Burning Man. She wears a furry hat with googly eyes in it and is notorious for swooping in and making you fall in love with yourself.

2. A sweet person who supports you and your passions.
I was feeling bad about myself until I talked to the Muppethead over there. She really made me think.
by Kkaufman August 28, 2016
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