About 2 years ago or so, Rod Stewart was one of the guests on Parkinson. Parky had a bit of a go at him regarding his "playing with trains". Rod replied in brilliant fashion, bringing Parky down to size.
There was no more p*** taking.
Around the same time, he ws a guest on the "Richard and Judy" show. Mr Madeley brought the subject of Rod's American layout up to him, and Rod shot him down too, managing to spend a large part of the interview describing the layout in some detail.
Another famous music artist, who I'll not name, was insulted by a couple of "neds" who spotted the Railway Book he had in his possession. I think they said "Choo Choo" or something like that. His responce was "Choo Choo ay. Well Chew Chew on that.", and he rammed the hardback into the mouth of one the "neds".