Muppin is a universal word that means absolutely nothing but in turn means absolutely everything. It is generally used to describe anything and everything you choose to see fit. Commonly used to replace foul language in front of children and to confuse most grown adults. It can be used as an adjective and a noun. It is known in many circles as one of the funniest words to say. It can also be used to replace other words as well.
What the muppin is going on here.
I had court today and it was straight Muppins.
She was all muppin at dinner so we didn't really have a good time.
A Fall River, MA hood rat that tries to scam people out of money with sob stories about her car being "stolen" when its really been repossessed, having cancer when she doesn't, and makes up stories about domestic abuse and being robbed.
A slightly less charismatic, less attractive muppet who instead of being featured onstage is confined to the closet. Closet muppets are similar to other, more popular muppets, except that they lack the strong personalities, or they have slight cosmetic inconsistencies, such as the eyes are on crooked. The term generally is used to refer to people who are odd, unusual or have characteristics similar to a closet muppet.
Kermit: Are there any cute girls in your class?
Gonzo: Nah, they're all closetmuppets.