Fluff

Fluff usually refers to a short piece of fanfic which is a little bit silly and quite cute. Often they involve light romance, but not gratuitous sex and may well focus on simple, everyday expressions of love. Fluffy fics usually lack conflict and tend to be quite light-hearted, however the sweetness can be overdone at times and they can become Saccharine and lacking in real characterisation.

Examples of fluffy plots are:

Lilly and James Potter looking after baby Harry.

Elladan and Elrohir playing practical jokes.

Susan and Death having a family Hogswatch.

Fluff fics are always vignettes.

Fluffy is also the name of a Cerberus, a giant three-headed dog, in Harry Potter and the Philosopher's Stone, that was guarding a trapdoor in a room on a third floor corridor. For this reason, students were warned that entering that corridor may result in a horrible and painful death. It bit Snape (yay), but could easily be put to sleep by music.