I had a pleasant few minutes the other day discussing irony with Peter of India, who very politely informed me (half a dozen times), that he was not selling anything, but instead could he ask a few questions to pin down my lifestyle and buying habits in order to reduce the number of unwanted cold calls. After a fairly convoluted discussion and at the sixth time of asking, he also enquired whether I was going to answer any of his questions. My reply enabled him to close the case from his side.
Shame his name wasn't Clive, or there would have been a bit more mileage in it.