Fluffernaut
A Fluffernaut is a thing that is very fluffy.
" That cat is a fluffernaut "
fluffernaut
One who, similar to an astronaut, aquanaut or cosmonaut, explores the realms of fluff, pushing the boundaries of fluffiness or otherwise going to extremes in the pursuit of fluff.
"Wow your cat sure is fluffy."
"Yeah, she's a fluffernaut."
"Yeah, she's a fluffernaut."