T W A U ... The Chase...from...
Film, Media & TV9 mins ago
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For more on marking an answer as the "Best Answer", please visit our FAQ.I asked a similar question in Jan. and got this good answer angleterre:
I think it's actually because the phrase the Americans use was originally "AS IF I could care less". Quizmonster's example of our "cheap at half the price" is a very good comparison, as it is also used in a slightly miss-a-couple-of-words-out-and-therefore-make-it-a-bit-out-o f-context-so-it-sounds-odd way: it's a costermonger's cry of (these goods are) cheap (today) at half the (usual) price.