A polite, gentlemanly term used to replace various expletives (such as shit, fuck, cunt, Rick Roll) ni questions, insults and, less commonly, verbs in sentences.
Where the giddons is my polka dot cravate?
I say you fiend, get the giddons out of my wife's negligee drawer.
I saw a member of the lower classes today; he looked at me a bit offish, so I giddonsed the giddons out of him whatho! <Chortle>