Well, the crazy!evil side of self and of Agent!Ril, Darth Ember, tends to come up with some doozies. I share most of them just for lol.

Mary was a little Sue,
little Sue, little Sue,
Mary was a little Sue,
Always just the same.
We cut her up and buried her,
buried her, buried her,
we cut her up and buried her,
a mass grave with just one naaaame...

Sing a song of Suethors, a pocket full of knives,
Four and twenty fanbrats baked in a pie.
When the pie was opened the girls began to scream,
Really such a pity they weren't dead as they seemed
The Sues were in the fanfics, being dumb as hell,
The slash was in full swing, and pretty crap as well,
The fanbrats wanted praise for all this stupid shit,
When along came Ember and hacked them to bits!

Sane side offshunting, Ember's gone a-hunting,
To tear away some dumb Sue's skin, To wrap her shiny weapons in.

What shall we do with the stupid Suethor, what shall we do with the stupid Suethor, what shall we do with the stupid Suethor, ear-ly in the moooorning?
Stick her in an oven till she's roasted, stick her in an oven till she's roasted, stick her in an oven till she's roasted, ear-ly in the mooorning!

I had a little mission,
Against a Mary Sue
I kept my options open,
Then turned her into stew.
I fed her to her Suethor,
She had no idea
That her own creation
Was so very near.
I told her what was in it,
Laughed in her face,
Then scared the little nuisance
Until she knew her place.

As I was sharpening my knives,
I met a Sue of many lies.
A princess where she shouldn't be,
puts Jedi down on bended knee,
and makes it hard Canon to see.
With special skills and nice sharp knives,
How long can I keep her alive?

Okay, that's all for now, but if people like, I'll post some of the stuff that's completely invented, not just my filks.

It could go like this:

Little child, be not afraid
The PPC will kill the Sue
Keep you as yourself
Though they go insane
Canon is restored...

Two words, Tawaki: MLF Lullaby.

Totally.

... I was thinking of writing a Mossflower vermin lullaby to use in my next fic with Molly. I've been reading Ursula Vernon's "Little Creature" and I have a yearning for more of the Grotesque Cute.