stupid is as stupid does

== English == === Etymology === Apparently modeled on handsome is as handsome does. Attested since at least 1862, but popularized (perhaps independently) by the 1994 film Forrest Gump. === Pronunciation === === Proverb === stupid is as stupid does Stupid behaviour indicates stupidity. 1882 Anthony Trollope: Orley Farm As long as a man can pay twenty shillings in the pound and a trifle over, what does it matter if all the judges in the land was to call him stupid?' said Snengkeld. "Stupid is as stupid does." said Kantwise."Stupid be d--." said Moulder."Mr. Moulder, there's ladies present." said Mrs. Smiley,