Well I'm sure we can come up with clever comments that make people feel uncomfortable by serving to decompartmentalize things that have been compartmentalized in the thinking of the average JW. Or comments that make the cognitive dissonance stand out plainly, these have to be said in innocent manner and with an apparent obliviousness to the contradiction.
http://en.wikipedia.org/wiki/Compartmentalization_%28psychology%29
Compartmentalization is an unconscious psychological defense mechanism used to avoid cognitive dissonance, or the mental discomfort and anxiety caused by a person's having conflicting values, cognitions, emotions, beliefs, etc. within themselves.
Compartmentalization allows these conflicting ideas to co-exist by inhibiting direct or explicit acknowledgement and interaction between separate compartmentalized self states.[1]
sss