海绵宝宝也会难过
[hăi mián băo băo yĕ huì nán guò]
This refers to the cartoon character SpongeBob SquarePants experiencing sadness or hardship. It suggests that even a fun, carefree personality can sometimes feel pain or difficulties. SpongeBob represents lightheartedness and simplicity, while 'also has hardships' contrasts with his usual cheerful persona.