Sandra Ruttan's effective use of an obnoxious expression

My half-cocked theorizing about evolution crowded out at least one other thing I wanted to say yesterday about What Burns Within, so here it is now:

Author Sandra Ruttan makes effective use of one of the most grating locutions in recent English: "You don't get it." That expression embodies many pernicious qualities and practices: snobbery, condescension, sloganeering, infuriating obstinacy, pig-headed stupidity, substitution of put-down for argument, and often sneering political correctness as well.

The character whom Ruttan has utter the expression is a panicked, driven, victimized, vindictive. scheming, manipulative, dangerous sort, just the kind who would shake her head and say, "You don't get it." And she says it at her most panicked, dangerous and manipulative moment. The expression captures the essence of the character, and the character captures the essence of the expression. Ruttan gets it.

What other authors make effective use of grating expressions in this way?

© Peter Rozovsky 2008