Corrected entry: Jack (De Niro) is super-suspicious and likely to be aware of all the facts about everything that affects his family, yet he did not know that Greg's mother was a sex therapist. Surely once he knew his daughter was to marry into the Focker family, he would have looked into the family's background.
Mad Ade
27th Feb 2005
Correction: Reasonable point but remember from the first film that he was not even aware of his future son-in-law's real name so he has made mistakes in the past making this one believable. It's also likely that he only checked their background for criminal or political activities which would not necessarily flag up her occupation.
tw_stuart