Everyone knew Dally was from New York.
Everyone had heard at least one tale from Dally about what he did in New York.
But it didn't go much farther than that, because back in the old days Dally would tell his stories constantly. One day, while at the Curtis' house, Dally had been finishing a story when Ponyboy had said he sounded like an old man reminscing the 'good ole days'.
As much as Dally wanted to beat the snot out of Ponyboy for that comment, Darry and Soda were there.
But since that day, Dally hasn't told many stories.