Nausea Fuel
For the sake of keeping your keyboard clean from barf, we let Ame take a look at the picture we had in mind for this page.

"Well, thanks for that. I know I'll never eat again."
Cassie Cage, Mortal Kombat X, after watching Mileena die a truly Cruel and Unusual Death.

This is not Squick. Nausea Fuel are scenes and events that are specifically meant to be disgusting. While Squick only makes some people go "ew, gross" and is extremely subjective, Nausea Fuel is is created (and is often considered by everyone) to be sickening and horrifying.

For example, someone getting punched in the face and bleeding profusely is Squick. That same head getting crushed, graphically, is Nausea Fuel. When there's no gore involved, this trope is most commonly invoked by motion sickness or anything involving bodily functions.

Paradoxically (or maybe not), Glurge can also find itself in this category.

Related to Squick, Shock Site and Gross-Out Show. Eye Scream and Gross-Up Close-Up are subtropes of this. May overlap with Fan Disservice, Gorn and Nightmare Fuel.