A few shots zeroing in on cleavage and large breasts as the baby does sign language for milk. Non sexual
Jack holds up a book that has the title "Is Your Vagina Happy?"
On a bus, carrying a bunch of girls, one girl lifts her shirt and you briefly see the bottom of her breasts. Then, a person's naked butt is seen (mooning the car next to them.)
A couple are in bed doing sexual things with each other, you can hear sexual sounds from around the house.
Many sexual subjects and references throughout the movie:
A woman asks another woman about her sex life.
There are subjects referring to genitals, terms like turtle head, winky dink etc are used.
Sexual objects are seen in the Focker's house. There are statue genitals, sex books etc.
Many other talks about sex and relationships throughout.
Ross does a sex therapy class that involes sexual movements.
At the end of the movie it is implied that Jack and Dina have sex.
There is a dog that humps stuff.