There was a time when you said the above word when you doubted the veracity of the statement or question you were confronted with. That was before the Modern Family cast entered your living room and your pizza and beer laden brain. Nowadays, it could mean anything from, 'you are kidding me!', to 'No, you don't mean that', to 'Why is this happening to me?' to 'Oh, come on now' and a wide range of other emotions and expressions. I am not knocking a sitcom lingo wriggling its way into the everyday vocabulary of its audience, Seinfeld did it with 'yada, yada'. But that was a new word, wasn't it? Somehow, "seriously" doesn't have the same appeal. You just take an existing word and cram it with all kinds of meanings till dies a violent death, groaning under the weight of all the meanings it was not supposed to carry, probably blurting out weakly before breathing its last:' I couldn't take it. Seriously.' It's force-feeding, that's what it is, a foie gras (wtd?) of words. Interestingly, I've only observed the fairer sex displaying the symptoms of this, shall we say, 'seriousitis'? Hope it's a passing fad, in all seriousness.