[Intro: Wendy, Irene]
Hey yo
Knock knock
Geogi nugu eobsnayo? (Yeah, oh yeah)
Knock knock (Yeah)
Yeogin eodiingayo?
[Verse 1: Seulgi, Wendy]
Eoneu haes-sal joh-eun ohu naleunhi neomgin
Chaegjang sog yeppeugo isanghan geulim
Mundeug son-i meomchwojyeoss-eoyo
Nal bogo sallangsallang ppalli olaola sonjishae
Nado moleuge jeomjeom
Ppallyeo deul-eogage dwaess-eoyo
[Verse 2: Joy]
Isanghan nalaui ibguneun heomhaessjyo
Sum-eul heoltteog-imyeo jeoneun dochaghaessjyo
Bing-gеulbing-geul kkochdeul chumchuneun
Udangtangtang tokkidеul ssauneun
[Chorus: All]
Huff n Puff sum-i heogheog ttwieobwado
Naega jag-aseo poljjag ttwieo namuleul tago
Sesang-eul dulleobwassjyo
Huff n Puff kkum sog gat-eun singilu yeojeonhi
Meol-eoseo ttambang-ul-eul banjjag-imyeo
Jeoneun dallyeossdeon geojyo
[Refrain: Yeri, (Seulgi)]
Knock knock
Geogi nugu eobsnayo
Knock knock
Yeogin eodiingayo
(Are you ready?)
[Verse 3: Wendy]
I geulim-ui dwisjangkkaji
Jeoneun dallyeoga boassjyo
Bolasaeg haneulgwa bunhong-ui sinaesmul
[Verse 4: Irene, Joy & Seulgi]
Salgeumsalgeum jinayo monseuteo
Oh my god geuga nun-eul tteobeolyeo
Udangtangtang eolleun domangchyeo domangchyeo
Waenji na aldeon gos gat-a
Chinhan chingudeul-ieossdeon geos gat-a
Eodi sum-eoissni
[Chorus: All]
Huff n Puff sum-i heogheog ttwieobwado
Naega jag-aseo poljjag ttwieo namuleul tago
Sesang-eul dulleobwassjyo
Huff n Puff kkum sog gat-eun singilu yeojeonhi
Meol-eoseo ttambang-ul-eul banjjag-imyeo
Jeoneun dallyeossdeon geojyo
[Verse 5: Seulgi, Wendy, Joy & Yeri, (Yeri)]
I don't know why
Wae modu salajyeoss-eo?
Nae gieogdeul-eun geudaeloinde
I don't know why
Ja nolliji mayo
Na na na na eodideul sum-eossni (Hey)
[Chorus: All, (Joy), (Wendy), Seulgi]
Huff n Puff sum-i heogheog ttwieobwado (Yeah)
Naega jag-aseo poljjag ttwieo namuleul tago (Na na)
Sesang-eul dulleobwassjyo (Oh whoa~)
Huff n Puff kkum sog gat-eun singilu yeojeonhi (Yeah, yeah eh, oh)
Meol-eoseo (ttambang-ul-eul Yeah) banjjag-imyeo
Jeoneun dallyeossdeon geojyo
[Outro: Joy, (Wendy), Seulgi]
Knock knock (Oh knock knock, baby)
Geogi nugu eobsnayo? (geogi nugu eobsnayo?)
Knock knock
Yeogin eodiingayo?
(Knock knock baby
Knock knock knock knock yeah
Knock knock baby hey yeah)