the daddy of your respective son- or daughter-in-law; that is, the father-in-law of the daughter or son, or, the father of one partner in terms of the moms and dads associated with various other spouse.
A theory or system of social reform which contemplates a complete reconstruction of society with a more just and equitable distribution of property and labor In popular usage the term is often employed to indicate any lawless revolutionary social scheme See Communism Fourierism Saint Simonianism forms of socialism...
How would you define co-father-in-law?