[Intro: Tzuyu, Nayeon]
Ah, ah, ah, ah
Yeah, the best thing I ever did
Ah, ah, ah, ah
Hmm

[Verse 1: Mina, Momo]
December illyeone kkeuteul neowa I remember
Uri chueogeun nuncheoreom ssaigo
Neoreul wihae namgyeodun sumaneun mari maemdora
Tteollineun geol

[Pre-Chorus: Jeongyeon]
Neul weropgiman haesseotteon sseulsseulhaesseotteon
Shibiweori ijen weropji ana

[Chorus: Nayeon, Jihyo]
Naega olhae jeil jalhan il neoreul mannan geot
Neoreul mannan geot neoreul mannan geot
Naega olhae anhan il junge jeil jalhan il
Neowa heyeojiji aneun geot hamkke inneun geot

[Pos-Chorus: Tzuyu, Sana, Mina]
All I wanna do, all I wanna do
Idaero idaero idaero idaero
Neowa yeongweonhi duri
All I wanna do, all I wanna do
Idaero idaero idaero idaero
Byeonhaji anko uri

[Verse 2: Sana, Dahyun]
Naneun moreugenneunde jakku tiga naneunji
Chingudeuri nollyeo haru jongil ibi gwie geolcheottago
Honja isseodo nae dwie niga
Inneun geotcheoreom neukkyeo jakku gwiga
Ppalgaejineun geol eotteokae gyesok neol saenggakae

[Pre-Chorus: Chaeyoung]
Neul weropgiman haesseotteon sseulsseulhaesseotteon
Shibiweori ijen weropji ana

[Chorus: Nayeon, Jihyo]
Naega olhae jeil jalhan il neoreul mannan geot
Neoreul mannan geot neoreul mannan geot
Naega olhae anhan il junge jeil jalhan il
Neowa heyeojiji aneun geot hamkke inneun geot

[Bridge: Dahyun, Nayeon]
Olhaereul little by little
Bonaemyeonseo sumaneun ireul
Euimireul tteoollyeobwado wae modu
Neowa hamkkehan sungandeulppuninji
Na waenji sarange ppajeonna bwa

[Chorus: Nayeon, Jeongyeon]
Naega olhae jeil jalhan il neoreul mannan geot
Neoreul mannan geot neoreul mannan geot
Naega olhae anhan il junge jeil jalhan il
Neowa heyeojiji aneun geot hamkke inneun geot

[Pos-Chorus: Tzuyu, Momo, Jeongyeon]
All I wanna do, all I wanna do
Idaero idaero idaero idaero
Neowa yeongweonhi duri
All I wanna do, all I wanna do
Idaero idaero idaero idaero
Byeonhaji anko uri

[Outro: Jihyo, Nayeon]
Ah, ah, ah, ah
Yeah, the best thing I ever did
Ah, ah, ah, ah
The best thing I ever did