A friend who has been working on the Boris campaign tells me this story from the Back Boris Call Centre in Holborn other night, which was apparently manned by "a shoestring number of Tory boys fromn CCHQ and random - very random - volunteers.
The Boris worker flicked on speaker phone to his fellow workers who were in tears of laughter in time for the dear lady to chide: "He's gorgeous, and I'd like to see more of him..."