Zinger

The only good thing about really dumb people is that they sometimes prompt brilliant responses.

For example, take your average really dumb person:

Possibly the most preposterous notion to come from the radical Left is that blacks should be given free money expropriated by force from everyone else as a reward for having ancestors who were given a hard time — just like the ancestors of every human being on the planet. I won't insult the reader's intelligence by explaining the absurdity of thinking this unjust and profoundly moronic concept would improve race relations.

And place him next to D at LGM:

Mmmm, somehow I think insulting your readers' intelligence might actually be a steeper challenge than you think.

Bang!