This reminds me of a product a friend and I spec'ed out about 12 or 13 years ago, called 'Full Length Mirror'. Basically, it was an audio generator that said things like "Yes, I understand." or "Why is that?" (slightly Eliza-ish, but nowhere as deep). The idea being, as your explained your problem to it, it would acknowledge your speaking, and you'd get the "D'oh!" effect in short order.