Meet the Fockers

While visiting with the Fockers in Miami, Greg's parents said that he lost his virginity to Isabel, the housekeeper, who lived near them.

But the Fockers lived in Detroit, and Roz and Bernie only moved to Miami relatively recently (Bernie mentioned that they got Roz's parents' home when they passed away).

It would be kind of a strange coincidence if Isabel was in Detroit too and also moved to Miami.