Stuart Beerbelly Share definition Flag A slang term for a middle aged man who is quite fond of a drink. Borderline Alcoholic. Fuck sake that's the 7th Guinness you've had this night you Stuart Beerbelly. Stuart Beerbelly by James_Murray_IloveEngland April 5, 2025 0 0 Get merch Get the Stuart Beerbelly mug. Buy Now — $32.95 See more merch