walking down an alleyway one night a policeman spots a tramp with his finger shoved up the arse of another tramp. 'what on earth do you two think you are doing?'
the tramp answers, 'my good friend here has drunk too much today and i am simply trying to help him sick it up'.
the concerned policeman said, 'sticking your fingers up his arse won't do much good'.
'obviously officer, but sticking them in his mouth afterwards should work a treat'.