Similar to chron in definition, chronberries refers to anything that is awesome, sweet, cool, bitchin, etc. It is only used to specify the good in something, and can also be expressed as an arbitrary percentage. Typically used only by individuals who partake of marijuana smoking.
1.-Dude, that party last night was fuckin' chronberries!
-Yeah, until my date whipped her dick out. That was definately NOT chronberries.
2. Yeah man, my blind date was only, like, 65% chronberries. Her tits were sagging BAD...like a baseball in a plastic bag.