There's actually an article about them on KnowYourMeme. Not necessarily the best site, but it does have some informative information, like the minority of fluffy fandom are "hugboxes" which put ponies in nice situations or funny ones (that aren't about horrible mutilating the little pony).
There is also apparently a head cannon that shows how long these ponies take for a full term pregnancy. Yes, you heard right, they have created a biological gestation period for retarded, fluffy ponies that are essentially an OC from MLP.
There is also a section on what kinds of torture they do to the ponies and why they do it, apparently there is a massive overpopulation of the fluffy ponies- think chihouahouas in California- and they are often brutalized or modified to prevent more breeding.
Also, translation list of Fluffy Pony Speak and link.
Daddeh – Daddy
Mummah – Mommy
Babbeh – Baby
Good Babbeh – Healthy baby
Bad Babbeh – Runt
Horny Babbeh – Unicorn
Wingy Babbeh – Pegasus
Munsta Babbeh – Alicorn
Dummeh Babbeh – Deformed baby
Almost Mummah – Pregnant fluffy pony
Big Poppies! – Labor/Water break
Special Huggies – Sex
Big Owwies – Injury
Wowstest Owwies – Severe Injury
Fowevew Sweepies – Death
Boo Boo Juice – Blood
Sketties – Spaghetti
Wawa – Water
http://knowyourmeme.com/memes/fluffy-ponies
Enjoy your nightmares.