Shrek:
Shrek says in one scene that Lord Farquaad (who has a rather questionable name as it is!) is "compensating for something".
Shrek also says that he has to "save his ass", when referring to Donkey.
The Lion King:
Pumbaa: And I got downhearted, every time that I...
Timon: Hey Pumbaa, not in front of the kids!
Aladdin:
0:47 The expression on Abu's face in this scene. Also, the sultan appears to be having a "good time". Look at his expression after he comes out from underneath!
High School Musical:
The song Humuhumunukunukuapua'a has a few dirty lines. For example:
"I'll grasp your tail and stroke each tender gill." It sounds to me like Sharpay wants to grasp and stroke "something else".
"Then the wind went whoosh and thunder cracked." A fairly good description of a fart if I ever heard one!