Warning! Acting like a muppet might make people think you're retarded. But that is sort of fun.
Muppetdancing: You listen to a song (or make one up yourself) and start moving. You don't care if anyone laugh at you.
It might look ugly, but it's fun! (See FUN in UD.)
'Most Useless / Pathetic Person Ever Trained'
Common usage has seen the term become a day-to-day reference for someone who is particularly stupid, clumsy or lacking common in sense and logic.
Origins: Unknown - however most evidence points to the film industry (particulary gaffers & grips) rather than the US Military who is usually given the credit for such acronyms.
Tom? - Hell no, He's a total muppet."
"Look at her her blue eye shadow someone felt Muppety today."
(Wearing a shirt where you can see the bra clearly through it) "What a "Muppet."
"Whats the difference between a "Muppet" and a regular girl? Daddy issues."
" Is it me or do all muppets shop at kohls."