Catch a body through the Rye

Now, I founded! This part. In Page 115.

There is an important character over here!
The little boy and the poor family.

"He and his wife were just walking along, talking, not paying any attention to their kid. The kid was swell. He was walking in the street, instead of on the sidewalk, but right next to the curb. He was making out like he was walking a very straight line, the way kids do, and the whole time he kept singing and humming. I got up closer so I could hear what he was singing. He was just singing for the hell of it, you could tell. The cars zoomed by, brakes screeched all over the place, his parent paid no attention to him, and he kept on walking next to the curb and singing "If a body catch a body coming through the rye." It made me feel better. It made me feel not so depressed anymore."

I guess you guys can also found something from here! A kid who is madness was singing the song that related to "the catcher in the Rye" with no parent's attention, and in a seriously danger environment.

You know what I mean , right?..........