A Lady Walks Into A Bar With A Pig Under Her Arm

This joke required two telephone calls to Susan's old man because it's his joke and she's retarded.
A lady walks into a bar with a pig under her arm. The bartender looks up and sez 'Where'd you get that dog?' The lady sez 'That's not a dog, it's a pig.' The bartender sez 'I'm talking to the pig.'