《21GUN》是Green Day的一首歌曲，其歌詞如下：
Verse 1：
21 guns
I feel the weight of my gun in my hand
I feel the weight of the world on my shoulder
I feel like I'm back in control
Chorus：
And I'm taking back what's mine
And I'm taking back what's mine
And I'm taking back the world
Verse 2：
I'm on a mission to make a change
I'm gonna rise up and take back the day
And I won't be held down by anyone
Chorus：
And I'm taking back what's mine
And I'm taking back what's mine
And I'm taking back the world
Bridge：
It's time to take a stand and let them know
What's mine is mine and it's all around me now
And it's always been so I won't let you down now
Chorus：
And I'm taking back what's mine
And I'm taking back what's mine
Yeah, I'm taking back the world
Outro：
And I won't be denied now I won't be defeated now yeah yeah yeah yeah.