歌词好象是这是最后一次，我不想做多余的人。我说这是最后一次。

楼主说的应该是一首英文歌曲，是美国喜剧片《美国派2》的片尾曲
《The Last Time Again》，歌词的中文翻译里有你说的这几句。
歌手：lit 专辑：atomic
I don't wanna be an asshole anymore
Sick and tired of all the promises that I make to you
And I break to you
And I know you think you've heard it all before
Something tells me that you think I'm stupid when I say to you
That what I say is true
Too much lyin', too little tryin'
Lit

This time is gonna be the last time
The last time again
This time is gonna be the last time
The last time again
Well I don't wanna be redundant anymore
Skippin' like a broken record you can play again
But I'll do it all again
Put it behind me, then you rewind me

[guitar solo]
Once again
I must have been
Tryin' to wash away the sin
Cuz I wake up
Bathroom floor
I won't do this anymore
...starting tomorrow
[CHORUS X 2]