《Knock Knock Knock》是Twice演唱的一首歌曲，發行於2019年。以下是《Knock Knock Knock》的歌詞：
Knock Knock Knock, it's the neighbors
Now now now, you can't deny it
Now now now, I'm on my way
Let me hear you say, say, say, say
Oh oh oh oh oh oh oh oh oh
Oh oh oh oh oh oh oh oh oh
Yeah yeah yeah yeah yeah
Oh oh oh oh oh oh oh oh oh
（Chorus）
It's a real good thing I got a sweet tooth
And a taste for you, so I'm knocking on your door
I'm feeling naughty, so I'm knocking on your door
Let me hear you say, say, say, say, say yeah
Oh oh oh oh oh oh oh oh oh
Oh oh oh oh oh oh oh oh oh
（Verse 2）
What should I do to get you to let me in?
Is there something that I should be running from?
Can you please tell me the meaning of these knocks?
The answers will come if you keep knocking knocking knocking knocking knocking on my door. (Ooh ooh ooh)
（Chorus）
It's a real good thing I got a sweet tooth (Oh)
And a taste for you, so I'm knocking on your door (Ooh)
I'm feeling naughty, so I'm knocking on your door (Naughty)
Let me hear you say, say, say, say, say yeah (Yeah)
（Bridge）
Oh it's like a game of hide and seek (Ooh)
But this time it's me who's hiding from you (Yeah)
I'm feeling nervous and I'm feeling shy (Ooh)
But I know that I have to face my fears (Yeah)
（Chorus） x2
So let me in and we can start a new adventure together. (Yeah) Let me hear you say yeah yeah yeah yeah yeah. (Yeah) Oh my god, this is gonna be so fun. (Ooh) )))))))