When you get a blow job from a girl who has cold sores on her mouth. Other version: "Frosted California Crunchberries" - when you glaze the cold sores with ejaculate after the blowjob.
A made up word started at Belle Vernon PA Wal mart by a bunch of bored unloaders, its generally refers to a problem, issue, or just said at random, variations are crunchtastic, cruncherific, crunchlicious and anything else you can make up
1. The fleshy area between the butthole and the grundle that collects lint, grundle sweat, excrement, and excess toilet paper. This area is known to be inhabited by a multitude of Chunchberries.
"I went down on your mother last night and she left Chunchberries on my mouth, but it's okay because I passed them to you when we made out earlier"
"Did you guys hear what Nelson did yesterday? He shot a chunchberry through a straw at Mr. Baker during history class! It shall be known as Legendberry!"