I've shagged yur Mum

Three guys were drinking in a pub when another man comes in and starts drinking at the bar.


After a while he approaches the lads and, pointing at the one in the middle shouts,
'I've shagged your mother!'


The guys look bewildered as the man goes back to his place at the bar and resumes drinking.


Ten minutes later he comes back and points to the bloke in the middle of the trio and shouts,
'Did you hear me? I've shagged your mother'


Then he goes back to his drink.


A short time later the man comes up again, jabs his finger at the middle bloke and announces for the pub to hear,
'I've shagged your mother, and it was good.'


By now the trio have had enough and the one in the middle shouts,
'Dad, you're pissed. Bugger off home!'