Malthusian Fumble

When one attempts to use an obscure 3+ syllable word or phrase (e.g. a literary reference, popular saying, economic term) without having a iota of a clue what the word means, thus making the user appear to be a clueless douche.

Patrice: The tenor's entrance to the stage last night at the Opera was magnificently Malthusian!
BM: He's on the 15...the 10...the 5.... OH NO it was a Malthusian Fumble!