Dinner at a posh restaurant

A man takes his visiting country cousin to dinner at a posh restaurant.

They walk in, are ushered to a table by a formally dressed maitre d’, and seated at a table set with the finest china and crystal.

The cousin takes the damask napkin from the solid silver napkin ring, unfolds it, puts it around his neck and proceeds to tie a knot in the back.

The maitre d’ stares at him for a moment, then says between gritted teeth, “Sir, will you be having a shave or a haircut?”