Quickly forgotten, as in Their advice to her just went in one ear and out the other. This expression, a proverb in John Heywood's 1546 collection, conjures up a graphic image of sound traveling through one's head. [Late 1300s] if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}