我想变成海绵宝宝来逗你笑
[wŏ xiăng biàn chéng hăi mián băo băo lái dòu nĭ xiào]
Here, the person wants to turn into SpongeBob SquarePants - a popular cartoon character - in order to make someone laugh. It implies the user has an innocent intention to bring happiness and humor into the lives of those he/she cherishes.