Most unpleasant liquids (not including drinks you don't like etc). Includes beer that's had cigarettes dropped in it, the bottom of a bowl of cold porridge, what comes out of your clothes when you wring them out after swimming in a river.
The term was coined when me and my friends were camping in a mossy field and it poured with rain and the moss turned into a sort of lurid green, semi-liquid slime that oozed and got everywhere, mostly into out shoes and sleeping bags. That was the original gorange.
1. Beverly discovered that whilst she had been asleep, someone had poured the gorange left in the sink after the party into her hair.
2. Oh, man..... throw that gorange down the sink before I hurl.