Bull!

MY FATHER was an avid storyteller and his yarns were so animated and expressive that he could turn an ordinary event into something exciting.    
However, he was not above spicing up his stories with a little exaggeration, which was the case at a church supper where he was telling one to our pastor.  
The pastor would occasionally say, "Amazing, quite amazing!"  
"Reverend Jones," my father asked, "you must speak with a variety of folks.  Tell me, how do you react when you're sure someone is really 'shooting the bull'?"   
"Well," said the pastor, "I never want to hurt anyone's feelings, so I usually just say, 'That's amazing, quite amazing.'"

Source: Internet