Godfocker means: Jack is the father-in law’s name for Gaylord “Greg” Focker, in the “Little Fockers” film starring Robert DeNiro and Ben Stiller. Jack first used the term because he realized that Greg (now 5-year-old twins) and his daughter Pam are next in line for the Byrnes/Focker family patriarch. (in Community Dictionary, added by Cornelius Atkins)