I love stuff like this. It's the kind of thing Kenny Everett used to play in his shows. Never made such big news before though! It was all over the Today programme & PM!
One of my favourites is Robbie Vincent breaking down after one of the most ridiculous callers on his show on LBC! (Chris of Stratford about bus queues – unfortunatatly too large a file to post, you have to hear the whole thing!)
Johnny