From Merriam-Webster Online
Main Entry: 1blond
Variant(s): or blonde \ˈbländ\
Function: adjective
Etymology: Anglo-French blunt, blound, masculine, blounde, feminine
Date: 15th century
1: of a flaxen, golden, light auburn, or pale yellowish-brown color <blond hair>; also : having blond hair <a blond man> —spelled blond when used of a boy or man and often blonde when used of a girl or woman
So, we get to substitute all women in these jokes with men. Works for me!