My little pony
My little pony,
skinny and bony,
went to the circus,
and done it on purpose.
(it being a crap)
Alternative ending to the well-accepted first two lines is "made out of plastic, looks like a spastic".
written by Go*don *eti, approved by Log

Alternate version;
My little pony, skinny and bony,
under the table, drinking black label.
Not the most shocking version, but quite cute I suppose.
written by Ka*e S, approved by Log

Other words rhyming with Pony, apart from "boney", are baloney, Police Academy's Mahoney, Island (Coney), most pastas, and homey. I just wrote this.
My little Pony,
Just like Mahoney,
She's got a homey,
Makes helicopter noises that are phony.
And that's the best My Little Pony rhyme ever. SUBJECT CLOSED.
written by Jo* Blyt*, approved by Log

I do hope by the final line of your poem that you're not insinuating that it was Mahoney who made the funny helicopter noises in Police Academy. It was Jones. Everyone knows that.

Of course, if your little pony is just making helicopter noises in order to provide a very bad rhyme at the end, well, that's an awesome little pony. Mine didn't do anything. Except have really flammable hair.

Thanks for your feedback, Chad! No, I am aware it was Jones who made the noises - Jones is Mahoney's Homey, you see. I incorporated that into the language I used. And yes, my My Little Pony was awesome. We had amazing adventures, some of which didn't involve pints and pints of piss. Log.
written by Ch*d Co*ra, approved by Log

My little pony skinny and bony went to the park to play
Tripped on a wire caught on fire and that was the end of her day
written by an*ny*ous u*er, left hanging by Log

My little pony,
Skinny and bony,
Likes macaroni,
smothered in cheese.
written by an*nymou* us*r, left hanging by Log

Our version went thus:

My little Pony,
Skinny and bony,
Made out of plastic,
Looks like a spastic,

For some reason I was told off for this, cant think why.

reverendrepton@hotmail.com

written by Ed*ie Re*ton, disapproved by Susan

my little pony
skinny and body
looked in the mirror
saw a gorilla
fell down a ho-ole
sa-aw a mo-ole

Shit really
written by Si*one *rb*t, disapproved by Susan

ours was .

my little pony
skinny and bony
made out of plastic
built like a spastic..

still find it funny today.
written by st*ve da*son, disapproved by Ponky

Half a pounn of nuts and bolts
Half a pound of plastic
Put them in a washing machine
Out comes a spastic

Not very pc these days but extra mirth can be gained by replacing spastic with victim. E.G Chunk
written by Mi*e *un*, disapproved by Phil