Oh yeah, MHNY Means "My Hostage Not Yours". The author has a bunch of pretty good stuff (for zim,far as i know), like totally not neon genesis evangelion and some other autist collections.
You can find those all on AO3. You can find them on fanficnet too, but not the second one because it has images and full-on gifs. So i reccomend just filtering all fujofaggotry and going straight for those titles.
This sounds autistic for sure, but it IS good and it doesn't look like it'll be abandoned.