Glaswegian term used to describe a curvaceous females fat fanny.
Aka Fanny bulge.
Scottish guy 1: "Last night, I was pure shaggin' a fat burd. I was heavy bouncing on her fanny pouch. It was soft and spongy like yer maws clootie dumplin'!"
Scottish guy 2: "Naw, Mare like yer sisters ginger flapjacks!"