Green’s Dictionary of Slang

(US campus) to disgust, to repel.

1996		Eble Sl. and Sociability 30: In college slang out is the most productive particle: [...] goob out ‘cause repulsion or disgust’.
2003		D. Savage ‘Savage Love’ at VillageVoice.com 🌐 Mr. MVP is simply and sincerely goobed out by the thought of having vaginal intercourse with his wife while his unborn child floats around at the top of the vaginal canal.