Jack Byrnes is a former CIA agent that retired under the disguise of a florist. In Meet the Parents, Gaylord "Greg" Focker tries desperately to impress Jack so that he may ask for his daughter, Pam's hand in marriage. However, Jack does not trust Greg and uses his CIA techniques to investigate this murse.
In Meet the Fockers, Jack drives an RV with his family and Greg to meet Greg's parents, the Fockers.
Jack Byrnes: "My Mother", by Jack Byrnes. You gave me life, / You gave me milk, / You gave me courage. / Your name was Angela, / An angel from Heaven, / But you were also an angel of God, / And he needed you, too. / I selfishly tried to hold on to you, / While the cancer ate away at your organs, / Like an unstoppable rebel force, / And now we'll meet in Heaven, / And I shall see you / Nevermore, nevermore, nevermore. Pam Byrnes: Dad, that's beautiful. Greg Focker: That's amazing, so much love, and also so much information.
Bob Banks: What is that smell? Jack Byrnes: That smell, Bob, is our shit. Focker flushed the toilet in the den so the septic tank overflowed. Greg Focker: I told you, Jack, it wasn't me, it was Jinx. Jack Byrnes: FOCKER, I'm not gonna tell you again. Jinx cannot flush the toilet. He's a cat for Christ sakes! Larry: The animal doesn't even have thumbs, Focker.