"smilingfromeartoear"meansthatsomebodyisveryhappyandshowshishappinessonhisface.heissmiling,foirheismovedandexcitedbysomething.Hismouthisopened,andthehappinessandexcityismovingfromoneeartotheotherear.themouthisjustlikeabridgeconnectedanearwiththeotherear,smilingismovingfromoneeartotheotherear.