Guinness.
I was drinking with my friend D. in one of our regular haunts. Another friend, W., arrived just before 'time' was called and bought himself three pints of draught Guinness before taking a seat at out table. We talked and supped; but it wasn't long before Scowling-Arse, the barman, was wandering about encouraging people to, "drink-up" or, "do your talking while you're walking". We weren't in any particular hurry to leave; after all, there had been around four and a half pints on our table before W had added his to the collection. Scowling-Arse was hovering around us, dropping hints like hot rivets; he cleaned the over-sized ceramic ash-tray that dominated our table and treated us to that special scowl - the one that says, "don't you dare dirty that up again". We were immune to his miserable behaviour, secure in the knowledge that it was our god-given right to be the last ones out of any establishment we cared to grace with our presence. Eventually things got a bit ugly. D. and I were down to the dregs, but W still had a full pint of Guinness in front of him.
"Either get that down your neck or it's going down the drain." challenged Scowling-Arse. W. looked at him contemptuously, stood up and literally poured the beer down his open throat in one go, before handing Scowling-Arse the empty glass. D. and I were impressed; but W. had one more trick up his sleeve: flexing his knees, he opened his mouth and puked the beer smack-bang into the centre of the ash-tray. Large as it was, it still wasn't big enough, and the vomited ale overflowed, across the table and down onto the carpet.
"Happy now?" asked W before walking out.

Personally, I was very impressed - not only was the regurgitated beer totally 'sans carrot', but what remained in the ash-tray slowly formed that familiar Guinness 'head'.
(minimalist ..., Tue 12 Jan 2010, 11:26, 2 replies)

Yeah!
Have that! Stupid barman, trying to shut his pub after closing time!

In your face, clean up that mess for being totally reasonable!
(The Kwyjibo A big, dumb, balding North American ape., Tue 12 Jan 2010, 11:31, closed)

Bastardly behaviour
but the image - wow. Your friend should join a circus!
(bovine intervention, Tue 12 Jan 2010, 16:42, closed)