[Intro: Chuu, Yves, Heejin, Olivia Hye, Jinsoul]
Who am I, who am I, who am I, who am I?
Najocha mollatdeon nae moseup nugulkka
Deullyeodabwa (seuchyeo jinan sungankkaji)
Gwi giullyeobwa
Nareul bureun natseon soril hyanghae
[Verse 1: Kim Lip, All, Chuu, Vivi, Yeojin]
Neomu adeukaetdeon
Nae mamsogui mystery
Naega nuguinji (Oh, oh-oh-oh, woo-ooh)
Gin gin hogisimi
Kkeureodanggin geugose
Nareul deo nareul deo nareul deo
Deryeoga deryeoga deryeoga ooh
[Pre-Chorus: Kim Lip, Hyunjin, Olivia Hye, Jinsoul]
Oh-oh-oh-oh, ooh-ooh-ooh, oh
Oh-oh-oh-oh, beil soge gamchwotdeon
Oh-oh-oh-oh, naege jogeumssik gakkawojineun na
Geu ane sum swineun jinjja nae moseubeul bwa
[Chorus: Heejin, All, Haseul, Hyunjin, Go Won]
Bimirui kkeut
Yes I'm, yes I'm, yes I'm
Dadareun mun
Challanhan
Nae moseubeul (mannan geoya)
Yes I'm, yes I'm, yes I'm
Nal hyanghan call
[Refrain: All, Haseul, Heejin, Yves]
Ooh, gadeuk ullineun
Sorin nayeotdeon geolkka
Ooh, naega chajeun geon
Jinjja naui moseup
Ooh, yeogi boin geon
Naraneun dap (dap)
[Verse 2: Choerry, Go Won, Vivi, Yeojin, Olivia Hye]
Zoom zoom, gakkai deo (Yeah)
Jeomjeom naega boyeo (Uh huh)
Oh oh, hinteuneun mwo?
A to Z mwodeun da daeipae bwa
Sokdoneun jayu banghyangeun naro
Mueoseul hadeun da nae mamdaero
Nuga mworaedo nan nal jjochaga
Got georineun zero gidarin segyero
[Pre-Chorus: Kim Lip, Jinsoul, Hyunjin, Chuu]
Oh-oh-oh-oh, ooh-ooh-ooh, oh
Oh-oh-oh-oh, hwansangeul neomeun gijeok
Oh-oh-oh-oh, naege deo mani gakkawojineun na
Geutorok gidarin jinjja nae moseubeul bwa
[Chorus: Haseul, All, Vivi, Choerry, Olivia Hye]
Bimirui kkeut
Yes I'm, yes I'm, yes I'm
Dadareun mun
Challanhan
Nae moseubeul (mannan geoya)
Yes I'm, yes I'm, yes I'm
Nal hyanghan call
[Refrain: All, Chuu, Kim Lip, Jinsoul]
Ooh, gadeuk ullineun
Sorin nayeotdeon geolkka
Ooh, naega chajeun geon
Jinjja naui moseup
Ooh, yeogi boin geon
Naraneun dap (dap)
[Bridge: Heejin, Yves, Hyunjin, Chuu]
I teong bin gonggan sogeul hemaedeon nan
Dolgo dora nareul chajeun geoya
I sungani jeongdabi dwae
Geugeon oh, I know (Hoo)
[Rap: Vivi, Haseul, Kim Lip, Hyunjin, Choerry, Olivia Hye, Heejin, Chuu]
Yeah, gaja one, two (Oh)
Yeogi nal bureun mameul ttara (Oh)
Simjang sorineun deo nopyeo (Yeah)
Deultteuneun gamjeonge oh oh (Oh, oh)
Nuga gamhi hamburo nal jeonguihagesseo (Whoa)
Jinjja nae moseup ane jayureul neukkyeo (Yeah)
Go on and on and on neureonaneun geotdeul
Nal deo mannalsurok up, upgrade (Up, upgrade, oh)
[Outro: All, Haseul, Kim Lip, Go Won, Hyunjin, Yeojin, Jinsoul, Choerry, Heejin]
Ooh-ooh-ooh, nareul bureun geon
Jinjja nayeotdeon geoya
Ooh-ooh-ooh, naega chajeun geon
Jayuroun moseup
Ooh-ooh-ooh-ooh, yeogi boin geon
Yes I'm, yes I'm, yes I'm
Nal hyanghan call (Call)
Ooh-ooh-ooh