Which means …' TJ concluded, and Jasmine could practically see the drumroll behind his eyes, 'we all basically … boogers.'”
-- TJ (chapter 1)

Importance: Jasmine and TJ are close friends, and TJ has just gone through a lengthy explanation of why humans are made up of dust and water, just like boogers. This kind of humor appears throughout the novel.

The four of them together were the kids teachers were concerned about. The ones they talked trash about in the teachers' lounge.”
-- Narrator (chapter 2)

Importance: The "four" mentioned in this quote are John John, Francy, Trista, and Britton, and they make up the group called the Low Cuts. This is one of the red herrings in this novel, because it makes it seem that the four are doing something that will get them in trouble on this particular day, when they are actually just getting ice cream for Britton's mother, who has just begun chemo again.

The...
-- Narrator (chapter 2)