Perhaps we should throw this thread open as a guide to what we shouldn't buy for our spouse this Christmas?
I would suggest that one really big No, No, would be to buy your wife one of those No No razors being advertised at the moment.
I really do think that although your good lady may buy one for herself to secretly remove side burns, mustache and nipple hairs, To open a gift from you that say's, "it's about time you had a shave, you're looking more masculine than I am at the moment", would perhaps add a little more tension to the Christmas dinner than any household deserves.
