A guy takes his dog for a walk and stops in a bar. He tells the bartender he has a talking dog and will prove it for a free beer. Bartender doesn't believe it but agrees. The guy says: "Dog, what do you call the top of a house?" The dog answers "ROOF." Bartender groans and is about to throw the guy out when the guy says "Dog, what do you call the outside of a tree?" The dog says "BARK." Bartender groans again and then the guy says "Dog, who's the world's greatest baseball player?" The dog says "RUTH." Whereupon the bartender throws them out into the street. As they pick themselves up from the gutter, the dog says "Should I have said Ted Williams?"