1 definition by McBevan
When it's overly warm/hot either indoors or outside. Sometimes brought on by wearing to many layers. Can even be used in hot tub/sauna like situations when you actually knew it would be hot before you went in. Sometimes like actually being trapped inside a giant muff
Guy1:"Fookin hell it's well muffy in here - can't you open a window?"
Guy2:"I did but its muffy outside too!"
Guy1:"I think i may die from the muffyness!"
Guy2:"I did but its muffy outside too!"
Guy1:"I think i may die from the muffyness!"
by McBevan April 14, 2009