A pseudonym for the lager Stella Artois. A lager that is popular with the non-landed gentry of the UK.
The combination of said gentlemen and this potent tipple is cause for concern for many local constabularies, ambulance services and battered wives.
Daz: Oi, Shazza where'd you get that black eye?
Sharon: Baz had was on the Stella 'Ard Bastard again last night.