According Husbandry 101...following a goof..we are to revert to simply Yes M'am..No M'am..No excuse, M'am..."wrong" does not enter into the equation at all...at no time.
As a stall, you can stutter the r-r-r- sound...which will lead her automatically to the term "receipt"..which is something she has right in her purse...by the time she gets done searching her purse for any receipt..she will have forgotten she had you cornered on the subject...and you can be lost in the closest newspaper or tv show...maybe even asleep in the Lazyboy!
The vast majority of us were wrong so dont feel too bad. Also, I was reminded that we should take solace in the fact that we envisioned what the i-pod has accomplished. Quite the consolation. I feel much better now/