《Painkiller》的歌詞由韓國女子音樂組合T-ara演唱，以下是這首歌的歌詞：
[副歌]
Give it to me, give it to me
Just the way that you are
[第一段]
Let me make you feel alright
It's like a drug that you need
Got me feeling like a fire girl
When you're with me, you're so sweet
Don't want to feel no more pain
Just take me away
[副歌]
Give it to me, give it to me
Just the way that you are
Take me away from my pain
And I'll do the same
[第二段]
Come on and let me take control
I'm feeling like a bad girl now
You make me feel like a queen
When you're with me, I'm so high
Don't want to feel no more pain
Just take me away
[橋段]
You make me feel like I'm on fire
You make me feel like I'm high
You make me feel like I'm on top of the world
When you're with me, I'm so fine
I don't want to feel no more pain
Just take me away from my pain
[副歌]
Give it to me, give it to me (just the way that you are)
Take me away from my pain (so we can both feel alright)
Oh baby, give it to me now (and let the fire start)
Yeah yeah yeah, don't be shy, girl, take my pain away
Oh baby, I can see your pain (oh baby)
And I can make it all better (oh baby)
So baby, give it to me now (give it to me)
Yeah yeah yeah, don't be shy, girl, take my hand now
[結尾]
And we can both feel alright (feel alright)
Oh baby, give it to me now (give it to me)
Yeah yeah yeah, don't be shy, girl, take my hand now (take my hand now)