In the episode "naughty nautical neighbors" where Patrick and sponge bob aren't friends, there is a part where the squid invites them over for dinner. After he goes out to get soda Patrick and sponge bob become friends again and his house explodes. As the squid is coming back, he takes out his house keys and is about to pick out his own key until he hears the explosion. He dropped his keys onto the floor without even putting his key into the hole and opened the door. I thought he needed a key in the first place to be able to get in.