I found this drawing in a word document from /exeg/ in /vg/, which is strongly tied to /funkg/ so there's lots of crappy but funny OCs as well (with few ponies however, maybe just 2).
I found the link here.
https://rentry.org/exeg-images-archives

Image description:

My Little M0use/Sarah but GR15/Needlehorse/Needleh0rse (/trash/): sarah but she haunts a disk with mlp episodes burned onto it

>She's just a background pony that pops up at times in the episodes and can only be seen by (you)
>She makes creepy smirking expressions while looking at the viewer, driving you mad at the possibility that your DVD is corrupted/haunted. Making you decide to analyze every scene she's in.
>She is literally the only background pony in the series that breaks the 4th wall for the sake of driving you, the viewer, insane.
>She never says or does anything aside from look at you with disturbing evil looks that scream "I can see you"
That.. is actually kinda fucking terrifying.
Song Names: I see you