Why couldn't a father then marry a son, he wonders
                                
                                
                                    (Newser) -
                                    Jeremy Irons has some interesting ideas about gay marriage. If it's legalized, then "could a father not marry his son?" the Academy Award-winning actor asked in a  Huffington Post  interview. Sure, incest would presumably still be illegal, but in Irons' view, "it's not incest between men....