[Intro: Johnny]
(Ah, yeah)
Ay, bae, gon' love that like it's your birthday
Say, say, say, gon' love that like it's your birthday
Ay, bae, gon' love that like it's your birthday
Shake, shake, shake, pop champagne 'cause you're worth it

[Verse 1: Jaemin, Jisung, Hendery]
Wait, wait, wait (Yeah)
Wae geuri pyojeongdeuri simgakae (Ayy)
Calm down, geurae simhoheupae (Ayy)
Oneul bameun we gon' be okay (Be okay)
Beotyeowatji oraen siganui fightin' (Fightin')
Mirwoon celebration, let's pop it (Pop it)
Jigeumiji wanbyeokan taiming (Ayy)
Pillyohae opeusijeun jalhaewasseuni (Ayy)
Jeonbu da naeryeonoko gabojago leggo (Leggo)
Boyeo neoui nun soge taneun fuego (Ooh)
Kkeojiji aneul deut bameul saedo (saedo)
Uri ttaeme kkaebeorige neighbors (Ayy)

[Refrain: Johnny, Jaemin]
What, what, what? (What, what?)
Take what you want, want, want (Want, want)
Like your birthday-day-day (Day, day)
Baby, 'cause you deser-ser-serve (Ay)

[Pre-Chorus: Jungwoo, Johnny, Yuta, Chenle]
Tonight it gon' be a drama (A drama, drama)
Hwanhage neoreul bichuneun limelight, party, party
Yeah, you vibe lose control, yeah-eh, yeah
Ne mame deul ttaekkaji, like it's ya birthday party

[Chorus: Shotaro, Jaemin, Hendery, All]
Nungama, baby, gwaenchana, baby (This is what you want)
You gonna love it
Mwol sangsanghadeun like birthday party
Ooh, eh-oh-eh-oh-eh-oh
It's like ya birthday party
Ooh, eh-oh-eh-oh-eh-oh
Bir-bir-birthday party

[Verse 2: Johnny, Hendery, Jaemin, Shotaro]
(Oh, yeah)
Shake, shake, shake (Shake, shake)
Teojyeo bottle of ace (Of ace)
Gamsaneun no thanks (Bang)
Geurae geureon pyojeongimyeon dwae (Bang)
Neodo neukkiji, yeah, we vibin' (We vibin')
Amureon geokjeong ma geugeon jom toxic (jom toxic)
Let's turn the bass so loud (Loud)
Onmomi tteollige, wow
Oh, God, can you feel that? (Can you feel that?)

[Refrain: Jisung, Johnny]
What, what, what? (What, what?)
Take what you want, want, want (Want, want)
Like your birthday-day-day (Day, day)
Baby, 'cause you deser-ser-serve (Ay)

[Pre-Chorus: Yuta, Jisung, Johnny, Jungwoo]
Tonight it gon' be a drama (A drama, drama)
Ama jigeum i sungani highlight, party, party
Yeah, you vibe, lose control, yeah, yeah
Achimi doel ttaekkaji, like it's ya birthday party

[Chorus: Jaemin, Chenle, Hendery, Jisung, *All*, **Shotaro**]
Nungama, baby, gwaenchana, baby (gwaenchana, baby; This is what you want)
You gonna love it
Mwol sangsanghadeun like birthday party
*Ooh, eh-oh-eh-oh-eh-oh*
**It's like ya birthday party**
*Ooh, eh-oh-eh-oh-eh-oh*
**Bir-bir-birthday party**
(Yo, DJ, can we switch it up a bit?)

[Interlude: Johnny, Chenle, Jaemin, All, *Hendery*]
Flip that, switch that (Ooh)
Shawty fine, big facts
I just wanna know that
I just wanna know that (That)
Ajik aswiwohagin illeo (Oh)
Like ya birthday, choreul se hana dul set
Let's see what happens with that (Oh, oh)
Birthday, birthday party
Birthday, birthday party, birthday
*Like ya birthday, choreul se hana dul set
Let's see what happens with that*

[Chorus: Jungwoo, Yuta, All, Chenle, *Johnny*, **Jisung**]
Nungama, baby, gwaenchana, baby (This is what you want)
You gonna love it
*mwol sangsanghadeun like birthday party* (Yeah-eh)
Ooh, eh-oh-eh-oh-eh-oh
**It's like ya birthday party**
Ooh, eh-oh-eh-oh-eh-oh (Oh-oh-oh-oh)
**Bir-bir-birthday party**

[Post-Chorus: Hendery, All, Shotaro]
Igeon jeonbu neol wihae (All day)
Oneulbameun neol wihae (Let's play)
Baby, you are worth it
Mwol sangsanghadeun like birthday party

[Outro: Jaemin]
Ay, bae, gon' love that like it's your birthday
Say, say, say, gon' love that like it's your birthday
Ay, bae, gon' love that like it's your birthday
Shake, shake, shake, pop champagne 'cause you're worth it