Adult humor in kids movies/TV shows

Sunshine_And_Sand

The people who make kids movies and shows know that it's highly likely that adults will end up having to watch these with their kids. So, a lot of them have some adult jokes that the kids don't get thrown in there.
What are some of your favorite of theses little gems?
Here are a few of mine:
- Toy Story 2 - At the end of the movie, Jessie rides the matchbox car around the toy car track to fling herself at the door knob so she can let the dog out to pee. Buzz's wings pop out.
- Planet 51 - Dewayne Johnson is the voice of an astronaut who lands on an alien planet. He is captured by the alien's military and they have him strapped down to a table and covered by a sheet. His alien friends come to rescue him. When he stands up you see the back of his legs (no cartoon nudity) as the sheet falls off. His alien friends stare at him and say, "That's a funny place for his antenna"
- Planes - Before the last leg of the race, Dusty (a crop duster) is talking to the old navy plane who is training him about how it will be hard to fly low during this part of the race, and they are trying to come up with a plan. Since he's a crop duster he's used to flying low and is afraid to fly at high altitudes. The navy plan tells him it's time to "lug nut up".