wisdumb

Origin:
wisdom + dumb = wisdumb

Definition:
n. a phrase or comment intended as an astute observation, that actually reveals unintelligence

Exemplum:
Emily's Yogi Tea revealed the words of wisdumb "Trust is the infinity of your soul," leaving us parched and craving the New Yorker.

Commentary:
Yet another entry in the oxymoronic portmanteau category. And this one has far more noble origins than frenemy. Which is to say, the source of its coinage is unknown. But it expresses an all-too familiar condition: the person who professes to be more intelligent than he or she truly is. The phenomenon as been documented by Shakespeare ("This above all: to thine own self be true"), The Simpsons ("They have the internet on computers now.") and clearly Yogi Tea, among others.

My father once saw an advertisement for Cartier timepieces in which "wisdom" was spelled "widsom." This regrettable exemplum is the meta-prototypical epitome of wisdumb-- having inadvertently advertisingly spelled "wisdom" incorrectly. He and I checked the time on our meticulously synchronized Patek Philippes, and had a hearty intergenerational rollick of it.

Credit:
Anonymous (term), Nate Winter (the rest)