What image do you recall when hearing 'Fluffy'? [closed]

Solution 1:

Fluffy means just that, fluffy.

adjective (fluffier, fluffiest)
1 of, like, or covered with fluff:
    a fluffy kitten
    fluffy white clouds

[ODO]

The usage in Harry Potter is ironic: the dog is anything but “fluffy”, so it gets that name. Similar usages are to call short people “Lofty”, or tall people “Shorty” or “Little” (like “Little John” in Robin Hood).

Solution 2:

When I hear the word fluffy, it would give me the feeling of something soft, cute, small, and covered with fur, like an adorable kitten.

The word fluffy can mean a different thing when it is used to describe a person.

fluffy

(of a person, esp. a woman) frivolous, silly, or vague: fluffy blondes in leopard-skin pedal pushers.