Symon

Laskitaas released an assortment of 'exotic breasts' as clothing on Nexus some time ago. It appears to have vanished. However, the readme, which I reproduce here in full, allows almost anything to be done with his fine work. Note that these are trivial to convert into body parts and while not BBB, weighting them should be much easier thanks to Gerra6's fine scripts.
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Description
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Adds some "unusual" breasts to equip like armor. Uses HGEC body. Note that this will NOT replace anything, you must equip the "armor" to see there new boobs.

Might fit will with Exnem's lowerbody as well, I didn't test.
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Location
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Inside a crate in the testing hall. To go there, call the console (the button below ESC), and type:
coc testinghall
To get out, type:
coc weye
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Compatibility
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Will not cause any conflicts or replace anything.
You may see clipping if you use any body mesh other than HGEC.
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Version history
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2008-07-09 - 1.0
Initial release.
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Credits
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HGEC people for the body model.
Myself for scaling and/or duplicating.
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License
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You can do whatever you want as long as no money is involved. You must also credit me for my work.
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Contact
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PM me at TESNexus. My login is Laskitaas.

The first ASX release but it is a little unusual.
This is a modders resource, usable in Morrowind, Oblivion and Skyrim.

It's a simple 7zipped Word document, with commentary and possible suggested dialog for sex that doesn't feel like Modern, 21st century America or Japan.
Use as much or as little of it as you wish.

Naturally because of it's nature, there are no screenshots or requirements apart from the ability to open a 7z archive, a Word document and a desire to read.