floof
To make something fluffy; to fluff (up).
informal, transitive
Then she floofs out her blonde curls artlessly and opens her mouth wide, checking her teeth for spinach.
To move in a floofy or fluffy manner.
informal, intransitive
She floofed down between Max and me on the Chickly Shabby sofa.
Where it comes from
Possibly a deliberate mispronunciation of fluff, a back-formation from floofy, or a blend of fluff + poof (compare the etymology of floofy).
Adapted from the Wiktionary entry floof (CC BY-SA 4.0).