Dubbed Robert Morley Line

When Robert Morley is examining Derek Jacobi, and they're talking about their clubs, Morley says the line 'mine's the Wig and Pen', but the line has been dubbed and his lips actually form another club. A lip-reader would be able to make it out no doubt, but I can't. It'd be interesting to know what the original line was and why it was dubbed. I wonder whether anyone can help?