[Intro: Eunkwang]
Na-na, na-na, na-na, na-na, na-na, na-na, na-na

[Verse 1: Changsub]
Move over, and here I come
Last time was just a warm-up umm
This time, it's for real party (Oh)
Stay out of this if you can’t handle it

[Pre-Chorus: Changsub]
I'll walk out that door to see everything I wanted
I can hear the music playing on the other side of the door
I shout my lungs out, I don’t
Have time to hesitate

[Chorus: Minhyuk]
Back Door
Authorized personnel only here, back door
Authorized personnel only here, back door
Authorized personnel only here, back door
(If you want to be authorized)

[Verse 2: Peniel, Minhyuk]
Hey, this is a restricted arеa, only you're allowed
You got that V.I.P pass, therе is only one
It's stranger than Willy's golden ticket
I think you're sweeter than chocolate anyway
Lemme unwrap slowly, from head to toe
Let's find out, just how many
Licks does it take to make your
Mind control and volume check
We'll go till the end, I will very much end you
I get drunk more and more on each other's perfume
Once we're done, we kiss and do it one more time
It's dangerous as if my reasoning would be lost
Feel so weird, in a dizzying trance
Every moment, turning up with your five senses
Your super high note, my soprano

[Pre-Chorus: Eunkwang, Minhyuk]
Everything looks different, and at this moment
Everything turns out to be perfect
I’m watching my fantasy unfold before my eyes
I shout my lungs out, I don't have time to hesitate
Back Door

[Bridge: Eunkwang, Changsub]
It is getting more glamorous as time passes
Yeah we gon' do it right now, do it right now, baby
Come to your senses from now on
Look at this world and keep it in your eyes
Your heart pounds, rum, pum, pum, pum

[Refrain: Minhyuk]
Make 'em say, "Wow, wow, wow," yeah
Bring ‘em all, all, all, ayy
Sing along, along, along, ayy

[Interlude: Peniel]
Uh, tell me your fantasy
I will make it a reality
Ayy, even if I start right away, time is running out
So tell me what it is right now

[Pre-Chorus: Eunkwang & Changsub]
I shout my lungs out
I don't have time to hesitate

[Chorus: Peniel & Minhyuk]
Back Door
Authorized personnel only here back door
Authorized personnel only here back door
Authorized personnel only here back door
If you want to be authorized (Knock, knock)

[Post-Chorus: Eunkwang & Changsub, All]
The bell rings and we go crazy (Yeah)
Today, we do our thang again
The bell rings and we go crazy
Tonight, I bark again, ay
The bell rings and we go crazy
Today, we do our thang again
The bell rings and we go crazy

[Outro: Minhyuk]
"Hey, you wanna come in?"