The name is based off of a cartoon from the past and it was called Grape Ape. He was a huge purple gorilla. Now for the definition. The balloon knot is normally a 'purple-ish' color (grape) and when you pull out of the ass, the sphincter can stay open for a brief period with the approximate girth of the intruder that was recently there (gape). In texting, this can be visualized by: ( O )
During an amazing cornholing with a hooker, I pulled out and took a look at her butt hole and saw a grape gape that seemed to be screaming.