-I got that the chicken joke is actually the chicken dying.
-Patrick Star is stupid because he lives under a rock.
-In Jurassic Park when they ride in the helicopter te Dr ties two female end seatbelt together as a reference to the fact all the dinosaurs are female and life finds a way.
-Lisa Simpson correctly predicted three Super Bowl wins in one episode

Also this is funny:
25 Adult Jokes In Cartoons That You Never Understood As A Kid