Acronyms have become so prevalent that they suffer what anything does when coined without end: devaluation. “Oh, my God” still packs quite a punch in the right circumstances. “OMG”, by contrast, is barely effective as a plaything any more. (“OMG he’s cute.” “OMG is it ten already?”) LOL began life as “laughing out loud”, a way for internet chatterers to explain a long pause in typing. Now, LOL means “you just said something so amusing my lip curled for a moment there.” And how many BFFs will truly be best friends forever? Teens, with their habit of bleaching once-mighty words (from “awesome” to “fantastic”), can quickly render a coinage banal.