Your casual bald man's comb

Those still blessed with a full head of hair may not understand why a balding fellow would bother to comb his head anyway. But there’s no shame in taking care of what you (don't) have (anymore): with the Bald Man’s Comb you can do it efficiently.

As gag gifts go, this actually seems that it could be viewed as a useful product, with the right perspective and sense of humor of course. ;-)