Vomitrocious - (adj.) so terrible or strange that it causes the tiniest bit of vomit to bubble up in your throat, and you get a little taste of whatever you ate earlier.
Now that we all understand our topic, we can get right into it. Assembled here is a bunch of weird stuff, some of it scary and awful, some of it just guano insane.
You tell us which ones make your last meal resurface.