Brobdingnagian: An unintelligible word people use to feign intelligence; or to express their unintelligible thoughts or emotions..

Example 1:   "What do you think of Nietzsche's "Beyond Good and Evil?"

    "It's Brobdingnagian."

Example 2: "Oh my God, your cat died! How do you feel?"

"Brobdingnagian. Very Brobdingnagian."