The stories usually progress in one of two ways: the "moral for today is..." way and the common Fetish Fuel ending:
In the first type of ending (which is more common as most of the stories are written by those from outside of the Breast Expansion fetish) the girl's attempt at breast augmentation always ends badly. Either she deflates, dies or is humiliated. Usually the point is hammered home when another character makes fun of her or embarrasses her for trying to be more well endowed. The Aesop, such as it is, usually is something like "Vanity is bad" or "Be proud of yourself" though usually it's portrayed more mean-spiritedly than that. On more than one occasion the girl is faced with some choice between being big and staying alive (e.g, the Everwood example) so as to make it seem even more obvious. This can lead to a serious case of Esoteric Happy Ending syndrome as soon as one realizes the kind of warped Aesop at work here: "Be happy about your appearance...or die!"
The second type of ending is almost universal in the actual Breast Expansion fetish itself, and those who support it. Usually in this ending the girl in question gets what she wants (bigger tits) and is usually quite happy with them. No Outer Limits Twist just a simple happy ending...usually ripe with sequel baiting.
Also various "methods" of breast expansion are employed...
Magic: self-explanatory, basically a magic spell that causes breasts to grow larger, for good or ill, either by design or accident. Breast expansion of this time may or may not imply that the expandee controls it. Trends toward the more idealistic endings.
- Example: After her grandma's funeral, Alice finds her busty grandmother's old ring, which causes her breasts to triple in size due to a charm.
Breast Implants: a more realistic option, involving plastic surgery and silicone or saline implants. Usually the capabilities of such implants are exaggerated in the story (e.g., inflatable, remote controlled, explosive...yes). Obviously, in this case, the girl being expanded almost universally controls and decides upon the operation. In most stories, outside of the fetish community, almost always ends with the girl "paying" for her vanity
- Example: Alice is a Pettanko who wants bigger breasts, so she has breast enhancement surgery to accomplish this.
Science: chemicals or special growth rays or suchlike cause breasts to grow larger. Usually implies self-control over the experience, similar to Breast Implants only with less side-effects or implications. Can go either way.
- Example: Alice falls into some radioactive waste...no adverse side-effects, save for the fact her breasts are now twice as big and growing.
Outside Influence: expansion controlled or caused by some outside force, e.g. aliens or demons or Lovecraftian Body Horrors that take the form of huge breasts. At no time does it really allow for the person to control the expansion. Can go either way.
- Example: Alice is implanted by an alien parasite that causes her breasts to grow acting as "holders" for the creature.
No Explanation: expansion comes from mysterious or purely mundane causes. Apply Rule of Sexy and Rule of Funny as appropriate. Only seen in sillier settings.
- Example: Alice has some some fun in the tub and her boobs grow bigger.
Also a type of Fetish Fuel. May include Gainaxing.
here's the old description
edited 3rd May '11 7:16:45 AM by captainpat
Gag Boobs aren't required for this trope. They don't have to be huge. They just have to get larger than they were.
Reality is that, which when you stop believing in it, doesn't go away. -Philip K. Dick
![[up]](https://static.tvtropes.org/pmwiki/pub/smiles/arrow_up.png "[up]"){kind=icon}
Gag Boobs are not 'huge boobs'. It is 'big breasts used for comedy'. It doesn't even need to be huge. And, anyway, Breast Expansion doesn't need to be used for comedy.
edited 3rd May '11 7:20:59 AM by Heatth
Cure Candy
Yeah your misusing the Gag Boobs there too.
Gag Boobs are Boobs played for comedy. This trope does not need any sort of thing.
edited 3rd May '11 7:21:43 AM by Raso
Sparkling and glittering! Jan-Ken-Pon!
To be fair though, you'd hard pressed to find an example of a character's who's breasts aren't used as Gag Boobs after the expansion.
Cure Candy
If its played realistically with back pain and all assorted problems.
Sparkling and glittering! Jan-Ken-Pon!
Btw, thanks for digging the old description, captainpat.
Does anyone knows what is so bad on it that needed to be cut? Aside being generally bad written and also misusing Gag Boobs, I mean. It is still better then the current one.
The paragraphs abouts Aesop and Fetish Fuel seem unnecessary.
Sure, but this shouldn't be reason for the cut. A rework was needed, yeah, abut not such extreme action. I want to know what we can keep from the old description, so we can use as a placeholder while we discuss how to improve.
Cure Candy
Oh this trope is very much a form of Fetish Fuel (Want me to start posting gifs?![[lol]](https://static.tvtropes.org/pmwiki/pub/images/lol2v12_4863.png "[lol]"){kind=small}
). The Aesop thing though probably not. Although that is dealt with in works such as when Marge in The Simpsons did the temporary version of this till she realized she didn't want implants.
edited 3rd May '11 7:35:03 AM by Raso
Sparkling and glittering! Jan-Ken-Pon!
The Other Troper
It should still be noted these are Fetish Fuel, even if in just a sentence.
I'm on the internet. My arguments are invalid.
Well, the second-to-last sentence did note it was Fetish Fuel. 
What about the paragraphs about the methods of Breast Expansion. Are these worthwhile?
edited 3rd May '11 7:36:55 AM by Heatth
Ok, but I don't think we need Asoep paragraph.
Which mean we should cut the first 4 paragraphs. Without them we can't even use the rest as placeholder, as there is no actual description.
What should we use in the replacement?
does it need that much of a description? A character's breast get bigger, that's kinda really it.
I think we should trim the methods down to shorter mentions. Think the one on the list that's the most important is probably that getting breast implants counts if the work is taking a more realistic route.
Reality is that, which when you stop believing in it, doesn't go away. -Philip K. Dick
The Other Troper
If a lot of examples are about an aesop, that should still be at least noted as well.
I'm on the internet. My arguments are invalid.
Cure Candy
I think the methods are ok to list. The possible Aesop message might be good to keep in 1 sentence quite a few examples touch on that, as well as another sentence for Fetish Fuel.
Need to link A-Cup Angst there as well.
edited 3rd May '11 7:43:07 AM by Raso
Sparkling and glittering! Jan-Ken-Pon!
When used as Fetish Fuel it is related to Buxom Is Better, isn't it?
edited 3rd May '11 7:49:41 AM by Heatth
The Other Troper
More like the act of making them bigger is as much of a turn on as them becoming big in the first place.
Cure Candy
Yeah its weird like that. It is sometimes just catering to the straight Buxom Is Better crowd though.
edited 5th May '11 3:43:36 AM by Raso
Sparkling and glittering! Jan-Ken-Pon!
The methods should stay cut, they were basically describing Green Rocks / Phlebotinum.
All we need to do is flesh out the description.
edited 21st May '11 10:43:56 PM by pokedude10
So I didn't see this discussion last time I visted this page a while ago and I edited the description because I thought it looked weak. Is that any better?
Zzzzzzzzzz
Description looks good to me.
...if you don’t love you’re dead, and if you do, they’ll kill you for it.
So, Fast Eddie cut the whole description because... something. I believe he had a good reason for such decision, but it is not available.
At any rate, the current description sucks and need to be improved vastly.
Oh, and it is misusing Gag Boobs.
edited 3rd May '11 7:04:27 AM by Heatth