SpongeBob is a porous, yellow sponge with square pants, hence the name SpongeBob SquarePants. He has large blue eyes, each with three eyelashes, and two prominent front teeth. He also has three freckles on each cheek and dimples. He wears a white shirt with a red tie, brown trousers held up by a black belt and black shoes. He usually replaces the red tie for a bow tie for special occasions. SpongeBob has a very distinctive and high-pitched laugh.