[Romanized:]

Hmm yeah, yeah

Oh gosh nalliya (Oh gosh)
Maja nan jom gibunpa
He geumbang tto sarange ppajyeo
(Yeah yeah yeah yeah)
Saegeonman joahaeyo banjjakgeorijyo
Dadeul geureochanayo majjyo?

Peek-A-Boo!
Seollel ttaeman saranginikka
(La la la la la)
Nae chingu modu sorichyeo neon jeongmal munjeya!
I'm fine fine fine fine fine fine

Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo
Heungi nan yeou geureon naragu
Peek-Peek-A-Peek-A-Boo

I said 1, 2, 3!
Play the game again
Beoteuneul nulleoboja kungpumankeum ppalli
Junggane nae mam byeonaedo nollaji malgi
Hokshi kkeulliji anni? geureom Excuse me
Ja jeonhwahaeyo bamsae tto nolleo gayo hamkke
Restart a game!
Doljinae rollinghae beullangka!

Oneul jeonyeokdo (Let's go!)
Noriteoneun bumbigo
Jiruhaejil teumjocha eopsjyo
(Yeah yeah yeah)
Binggeulbinggeul dorayo (Oh) dadeul ttokgatjyo
O machimnae majuchin nunbit

Peek-A-Boo!
Saeroweoyo sarangingayo
(La la la la la)
Nae chingu modu sorichyeo neon jeongmal munjeya!
I'm fine fine fine fine fine fine
(Ma Boo-Boo-Boo
Peek-A-Boo-Boo-Boo-Boo)

Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo

Sullaeneun neoro jeonghaejyeosseo
Jaemisseul geoya kkiweo julge
(Peek-Peek-A-Peek-A-Boo)
Jeo dari jeonggeuljime geollil
Shigankkaji noneun geoya
(Peek-Peek-A-Peek-A-Boo)

Peek-A-Boo!
Isanghae eora neon jom dalla
Ireon geim meomchugo neoreul dashi boge dwae
Museobji ana nan saeroun yaegiga
Pyeolchyeojil georaneun geol banggeum neukkyeosseunikka
(Yeah yeah yeah yeah yeah yeah~)

Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo
(La la la la la)
Heungi nan yeou geureon naragu
(La la Peek-A-Boo)
Peek-Peek-A-Peek-A-Boo

Sullaeneun neoro jeonghaejyeosseo
Jaemisseul geoya kkiweo julge
(Peek-Peek-A-Peek-A-Boo)
Jeo dari jeonggeuljime geollil
Shigankkaji noneun geoya
(Peek-Peek-A-Peek-A-Boo)

Sullaeneun neoro jeonghaejyeosseo
Jaemisseul geoya nega joa
(Peek-Peek-A-Peek-A-Boo)
Jeo dari jeonggeuljime geollil
Shiganijiman deo nolja!
(Peek-Peek-A-Peek-A-Boo)

Peek-A-Boo
Peek-A-Boo
Peek-A-Boo

[Korean:]

Hmm yeah, yeah

Oh gosh 난리야 (Oh gosh)
맞아 난 좀 기분파
헤 금방 또 사랑에 빠져
(Yeah yeah yeah yeah)
새것만 좋아해요 반짝거리죠
다들 그렇잖아요 맞죠?

Peek-A-Boo!
설렐 때만 사랑이니까
(La la la la la)
내 친구 모두 소리쳐 넌 정말 문제야!
I'm fine fine fine fine fine fine

Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo
흥이 난 여우 그런 나라구
Peek-Peek-A-Peek-A-Boo

I said 1, 2, 3!
Play the game again
버튼을 눌러보자 쿵푸만큼 빨리
중간에 내 맘 변해도 놀라지 말기
혹시 끌리지 않니? 그럼 Excuse me
자 전화해요 밤새 또 놀러 가요 함께
Restart a game!
돌진해 롤링해 블랑카!

오늘 저녁도 (Let's go!)
놀이터는 붐비고
지루해질 틈조차 없죠
(Yeah yeah yeah)
빙글빙글 돌아요 (Oh) 다들 똑같죠
오 마침내 마주친 눈빛

Peek-A-Boo!
새로워요 사랑인가요
(La la la la la)
내 친구 모두 소리쳐 넌 정말 문제야!
I'm fine fine fine fine fine fine
(Ma Boo-Boo-Boo
Peek-A-Boo-Boo-Boo-Boo)

Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo

술래는 너로 정해졌어
재밌을 거야 끼워 줄게
(Peek-Peek-A-Peek-A-Boo)
저 달이 정글짐에 걸릴
시간까지 노는 거야
(Peek-Peek-A-Peek-A-Boo)

Peek-A-Boo!
이상해 어라 넌 좀 달라
이런 게임 멈추고 너를 다시 보게 돼
무섭지 않아 난 새로운 얘기가
펼쳐질 거라는 걸 방금 느꼈으니까
(Yeah yeah yeah yeah yeah yeah~)

Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo
(La la la la la)
흥이 난 여우 그런 나라구
(La la Peek-A-Boo)
Peek-Peek-A-Peek-A-Boo

술래는 너로 정해졌어
재밌을 거야 끼워 줄게
(Peek-Peek-A-Peek-A-Boo)
저 달이 정글짐에 걸릴
시간까지 노는 거야
(Peek-Peek-A-Peek-A-Boo)

술래는 너로 정해졌어
재밌을 거야 네가 좋아
(Peek-Peek-A-Peek-A-Boo)
저 달이 정글짐에 걸릴
시간이지만 더 놀자!
(Peek-Peek-A-Peek-A-Boo)

Peek-A-Boo
Peek-A-Boo
Peek-A-Boo

[English translation:]

Hmm yeah, yeah

Oh gosh so crazy (Oh gosh)
Yeah, I'm an emotional girl
[Irene/Seulgi] I fall in love so easily
(Yeah yeah yeah yeah)
I like new things, they sparkle
Everyone's like that,right?

Peek-A-Boo!
It's love only when my heart flutters (La la la la la)
All my friends yell at me, they say I have a problem!
I'm fine fine fine fine fine fine

Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo
A fox who wants to have fun, that's me
Peek-Peek-A-Peek-A-Boo

I said 1, 2, 3!
Play the game again
Let's press the button, hurry like kung fu
Don't be surprised even if I change my mind
Aren't you attracted to me? Then excuse me
Call me, let's go play all night
Restart a game!
Go forward, roll it Blanka!

Tonight (Let's go!)
The playground is popping
No time to be bored
(Yeah yeah yeah)
Go round and round (Oh) everyone is the same
Then we locked eyes

Peek-A-Boo!
This is new, is this love? (La la la la la)
All my friends yell at me, they say I have a problem!
I'm fine fine fine fine fine fine
(Ma Boo-Boo-Boo
Peek-A-Boo-Boo-Boo-Boo)

Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo

Tag, you're it!
It'll be fun, I'll include you here
(Peek-Peek-A-Peek-A-Boo)
Till the moon hangs on the jungle gym
Let's play
(Peek-Peek-A-Peek-A-Boo)

Peek-A-Boo!
It's strange, you're different
I stop this game and I look at you again
I'm not afraid, because I just felt
That a new story will begin
(Yeah yeah yeah yeah yeah yeah~)

Peek-Peek-A-Peek-A-Boo
Peek-Peek-A-Peek-A-Boo
(La la la la la)
A fox who wants to have fun, that's me
(La la Peek-A-Boo)
Peek-Peek-A-Peek-A-Boo

Tag, you're it!
It'll be fun, I'll include you here
(Peek-Peek-A-Peek-A-Boo)
Till the moon hangs on the jungle gym
Let's play
(Peek-Peek-A-Peek-A-Boo)

Tag, you're it!
It'll be fun, I like you
(Peek-Peek-A-Peek-A-Boo)
Till the moon hangs on the jungle gym
Let's play a little more!
(Peek-Peek-A-Peek-A-Boo)

Peek-A-Boo
Peek-A-Boo
Peek-A-Boo