(one's) gorge rises (at something)

One is disgusted or sickened (by something). "Gorge" refers to the stomach; the phrase comes from Shakespeare's Hamlet. I could never be a doctor. Blood, vomit, open wounds—my gorge rises at all that kind of stuff. Her gorge rose listening to the senator's weak public apology following the scandal. You gorge will rise when you see how much the poor suffer only miles away from the rich.

your gorge rises

you are sickened or disgusted.

Gorge is an obsolete term from falconry, meaning ‘a meal for a hawk’; from this derives the more general sense of ‘the contents of the stomach’.