In chapter 23, Scout mentions that when school is over she cannot wait to invite Walter Cunningham Jr. over to play and spend the night. Aunt Alexandra responds by telling Scout, "We’ll see about that" (Lee, 227). Aunt Alexandra is prejudiced against individuals from lower social classes and does not want Jem and Scout associating with poor country folks. When Scout asks her aunt why not, Alexandra tells her,
"Jean Louise, there is no doubt in my mind that they’re good folks. But they’re not our kind of folks" (Lee, 227).
Aunt Alexandra's comment is her way of politely expressing her prejudice and telling Scout that she is too good to associate with any Cunningham. Alexandra proceeds to elaborate on her comment by telling Jem and Scout that there is nothing Walter Cunningham Jr. could do that would ever make him equal to Jem. When Scout continues to express her desire to play with Walter Cunningham Jr. and ask why she cannot invite him over, Aunt Alexandra becomes frustrated and finally tells her,
"Because—he—is—trash, that’s why you can’t play with him. I’ll not have you around him, picking up his habits and learning Lord-knows-what" (Lee, 228).