Mupperz 

A morbidly obese whore who is under the delusion that she is actually skinny and that everybody loves her, while all other females on the internet are fuck ugly and have irritating voices. Mupperz is incapable of laughing properly, and instead chooses to imitate a dying giraffe having a four wheel drive shoved up its anus.

Nahhh that's just Mupperz trying to laugh again.

Mupperz by GRiMis1337 July 28, 2010

Mupper 

Someone who likes to have fun.

Lee is a mupper.

Mupper by itsThemuRR September 19, 2018

Mupper 

An open handed slap to the vagina

Joanne is kinky, she likes receiving a hard mupper before intercourse.

Mupper by Peter P. Pablo December 31, 2008

muppers 

1.A child over 200 lbs.

2.A strange way to say maybe.

1.My handsom boy just turned 4. He is muppers.

2.Are you a virgin? Muppers.

muppers by BandS January 1, 2007

muppere 

Visitor from Pittsburgh area to Northwest Pennsylvania. Named for common local contraction for "I am up here"

"Muppere from Pittsburgh, you know where's the nearest Bennigan's?"

muppere by NDNDND May 8, 2006