《Why So Serious》的歌詞如下：
Verse 1：
You're always so serious
You don't let nobody in
You're always so cold
You don't even know your own soul
Chorus：
Why so serious
Got to get yourself together
Why so serious
Gonna let yourself be the winner
Verse 2：
You're always on your own
Never letting anyone in
You're always so alone
But you don't even know it
Chorus：
Why so serious
Got to get yourself together
Why so serious
Gonna let yourself be the winner
Bridge：
You're so beautiful
But you don't even see it
You're so powerful
But you don't even know it
Chorus：
Why so serious
Got to get yourself together
Why so serious
Gonna let yourself be the winner
Outro：
Gonna let yourself be the winner now
Gonna let yourself be the winner now
（註：以上歌詞僅供參考，因為歌詞可能會因為歌手或版本不同而有所差異）