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A person that is so digustingly ugly, there is nothing else to compare them too. Rock trolls are usually fat and have nasty pimples and zits covering their face and overall body surface. They tend to live in shacks or buildings that are old and falling apart. If you encounter one, dont look into its eyes.Rock Trolls are easily distracted by the soothing sound of an 80's band and deep friend mars bars.
Jack: Today I saw something come out of the rundown apratment down the block, and it was a total Rock Troll!

Bob: OMFG! Never look one in the eyes. The things you see are horrid.
by Wapacalypse August 11, 2010
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