Bernie and Abe are…

Bernie and Abe are having a drink together in a City wine bar to celebrate Abe ‘s recent promotion. They had been drinking for some time when Bernie begins to insult Abe. He shouts, I slept with your mother, Abe. 
There was a hush as everyone listens.
Bernie again shouts at Abe, I slept with your mother, Abe. 
Abe replies, I know. Why don ‘t you go home now, Dad, you ‘re drunk. 