Weight Gain Glossary: The Terms of the Niche, Explained

Weight gain fiction has its own vocabulary, and tags only work if you know it. Here are thirty clean, plain definitions, from the people terms to the formats we use in our films.

How to use this glossary

The terms below are grouped loosely: people, sizes, actions and formats. They describe fiction and community vocabulary, nothing about real bodies. Use them as search tags on the platforms in our feederism sites guide.

Where our films use them

Most of these terms show up in our work. A stage is a size step on a transformation page. A sequence is the before-to-after run you see in a weight gain comic. A set piece is the big final feast of each film. A turn is the walk-around that ends with her back to the camera.

Two terms deserve their own pages: belly expansion for the growth itself and belly stuffing for the eating scene. For sizes, see BBW to SSBBW.

A neighboring term

Blueberry belongs to a different corner of fiction, where characters swell in a different way. It is not part of our work, but you will see the word in neighboring tags.

Feedee: The character who is fed and gains weight in a story. In our films she is always an adult who is happy about it.
Feeder: The character who feeds the feedee. In our films the viewer takes this role: every plate is on you.
Gainer: A character, or fan, who is into gaining weight rather than being fed. In fiction, someone who does it by their own choice.
Encourager: A supporting character who cheers the feedee on without doing the feeding. Think of the chat in a stream.
Feederism: The umbrella word for the fantasy of feeding and weight gain. We treat it as fiction and fantasy only.
WG: Short for weight gain. Used in tags, as in “WG comic” or “WG story”.
Weight gain: The central theme of the niche: a character gets bigger over time, usually shown in stages.
BBW: Big beautiful woman. The softer, curvier first big step in fiction.
SSBBW: Super size BBW. The stage where size starts to shape furniture, doors and routine.
USSBBW: Ultra super size BBW. A stage beyond SSBBW, where the character fills a room.
Belly expansion: The belly visibly growing, either over a whole story or in one scene. See our page on belly expansion.
Stuffing: A scene of eating a lot of food, often with a visibly fuller stomach. See belly stuffing.
Belly stuffing: Another name for stuffing, usually focused on the belly filling during a meal.
Stage: One size step in a transformation, such as 480 lb in a film that runs 150 to 1,000 lb.
Sequence: A run of images from smaller to bigger, showing the change step by step.
Before/after: A two-image comparison of the start and end of a change. We prefer sequences because they show the middle.
Transformation: The full arc from the first size to the last, told as a story.
Progression: The path of the growth over time. A slow progression has many stages and small steps.
Gradual: A slow change with many small steps, as opposed to a sudden jump.
Rapid: A fast change, often within one scene. Mostly seen in short comics.
Outfit strain: A scene beat in which her outfit visibly tightens or rides up as she grows — a favourite moment in every film.
Button pop: A single button giving way from strain, used as a joke or a beat. A classic of comics.
WG comic: A comic about weight gain. Our comic pages are photo stages with a line of story each.
Weight gain story: A written story about weight gain, from a few paragraphs to a novel. See our stories.
Weight gain animation: Moving images of a character growing. See how we make ours.
Set piece: The big signature scene of a film. In ours it is the final feast.
Turn: A shot where she walks and turns all the way round so the audience sees her from behind. In ours she ends facing away.
Profile view: A side shot that shows the full line of her belly and body. We include one in every film.
Viewer-feeder: A way of writing where the viewer is addressed as the one who feeds her. It is the voice we use.
Premium gallery: A paid gallery on a platform that holds a full film or full set. Ours are on DeviantArt.

Questions

Good to know

What does WG mean?

WG stands for weight gain. It is used in tags such as WG comic and WG story.

What is the difference between a feeder and a feedee?

The feedee is the one who is fed and gains. The feeder is the one who feeds. In our films the viewer is the feeder.

What does belly expansion mean?

It means the belly visibly growing larger, over a story or in a single scene.

Is blueberry the same thing?

No. It is a neighboring fiction niche with a different kind of change.

Guides

Keep reading

Feederism Sites: An Honest Guide to Where Weight Gain Fiction Lives

Where to look

BBW to SSBBW: How Each Size Changes the Story

Size guide

Belly Stuffing in Fiction: How a Great Feast Scene Works

Stuffing scenes

Weight Gain Animation: How We Make Our AI Films

How it's made

AI Fat Filter vs. a Weight Gain Film: What's the Difference?

Comparison

The films

4 girls, slim to 1,000+ lb

Ivy weight gain before and after, 125 → 1,000 lb

goth café · 125 → 1,000 lb

Ivy — Fattened to the Max

almost 5 min · 12 scenes · with sound

A pink-haired goth works the night shift at a café with one house rule: whatever is left in the pastry case at closing is hers. So she stops leaving anything.

Read free Watch her grow · $15