noun;a scottish term used to describe a certain individual that is well-endowned in terms of human penis (shlong, walloper, trunch, tadger, tallywhacker, cock) length. The internationally recognised threshold is a "standard" 12.3 inches while flacid.
Angus: Can we have sex now?
Fat Ginger Burd: Ok (pulls trousers down), my god you're an absolute Gusball! I'm gonna be sooooo loose after this...