What would you do if you saw a walking, talking, sea sponge, starfish, crab and squid fighting an adult human on the beach? SpongeBob: The Movie brings the sea creatures of SpongeBob's world into reality, and it is weird.
It's okay that this movie is weird; SpongeBob the series is weird. So that falls into line with the animated series. Hey, at least it's not "scientifically accurate" SpongeBob.