Best definition
A pet name for someone loyal and devoted, who will always be there for you no matter what.

Whenever I’m most down, I turn to my wuffy for comfort.
Wuffy: define #2
Another way of saying crappy,naff,rubbish etc
A: “The animation in this film isn’t very good

B: Yer its all wuffy
Wuffy: define #3
An adjective usually applied to a big, warm, comfortable coat.
I think I’ll wear my wuffy coat.