For Derb: When did the phrase โ€œor else?โ€ become a threat without need of finishing the sentence? Presumably at some point people would say โ€œโ€ฆor else we will cut out your tongue!โ€ Or, โ€œโ€ฆor else, we will sew a ferret into your small intestine.โ€ When did the threat become implied? Was it a Shakespearean construction or deconstruction? Alas, unlike your Abbot and Costello question I have no idea what the answer is.