Adults swear (which kids hear and repeat) and talk about sex (which kids MIShear and repeat). The kids are only six years old, which adds some humour, but makes it very inappropriate. Jack, as usual, spies on Greg, and finds lame excuses so that he doesn't know (I.e.: I'm out getting some milk). My favorite jokes are "the Godfocker", the ballpit scene, and the turkey-cutting scene.