Someone's gay husband. Usually a female's best friend who happens to be gay. Or a female's husband on facebook who is gay. Husband meaning best friend, not actually meaning that they're married. It's like... a joke.
Emily: "If Matt's gay, then why is he listed as your husband on facbeook?"
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...
Gay husband and wife. Could be any combination: Man married to a Man. Woman married to a Woman. The matrimony of two gay people. Could also be Gusband and Gusband. Or...Gife and Gife.