海绵宝宝的微笑我学不会
[hăi mián băo băo de wēi xiào wŏ xué bù huì]
'Sponge Bob’s Smile I Can't Learn' refers to the cartoon character SpongeBob SquarePants. Perhaps it expresses a sense of self-mockery because one feels unable to mimic or achieve the same level of happiness and optimism which is always associated with Spongebob's characters.