Writing Patterns

I've noticed a few patterns in the way that J.D. Salinger has Holden narrate the story. Multiple times Holden over exaggerates periods of times. He said something along the lines of "when he was a kid, 50 years ago" and he also commented on a woman who worked at Phoebe's school saying she was close to a hundred years old, which was most likely an exaggeration. Also, when Holden is talking about one event that occurred it always leads into him telling a whole new story about something else that happened.