I-reol Jul A-ra-sseo Neo-ui Yae-gi
Cheo-eum Deun-neun Sun-gan-bu-teo
Si-keun-dung-han Neo-ui Geu Pyo-jeong
Mal-tu-e-seo Neu-kki-mi Wa
I-mi Ne Ma-eu-me Ja-ri Ja-beun
Tto Da-reun Geu-nyeol Cha-ja-sseo
Deo I-sang Al-kko-neun Sip-jjin A-na
Geu-nyang Jo-yong-hi Neol I-jeo-jul-ge
Oh! Happy happy day!
Oh! Happy happy smile!
Na-do Da-reun Sa-ram Man-na-do
Ji-geum-bo-da Deo Haeng-bo-kal-jji-do Mol-la
Ga-seu-mi Dap-tta-pae-ji-go Hwa-ga Na-go Nun-mu-ri Na
Nae-ga Mwol Jal-mo-taen-neun-ji-do Jeong-mal Mo-reu-ge-sseo
A-ju Tae-yeon-seu-reop-kke Naeng-jeong-han Cheok Ha-go Tto Ha-ji-man
Nae Ma-meun I-mi Ji-o-ge Tteo-reo-jin Neu-kki-mi-ya
Oh! Happy happy day!
Oh! Happy happy crazy tonight!
O-neul Bam Da-reun Sa-ram Man-na-myeon
Neo-reul Geu-nyang Ji-ul Geo-ya
Eo-tteon Neu-kki-min-ji A-ra-sseo
Da-reun Sa-ram Man-na-neun Neu-kkim
Sae-ro-un Sa-ram Man-na-myeon
Neo-bo-da Deo Jal-hae-jul-lae
Neo-reul It-kkin Him-deul-kket-jji-man
Si-ga-ni Hae-gyeol-hae Jul Geo-ya
Eo-di-seo Deu-reun Yae-gi-cheo-reom
Jo-eun Gyeong-heo-mi-ra-go Mi-deul-lae
Oh! Happy happy day!
Oh! Happy happy smile!
Na-do Da-reun Sa-ram Man-na-do
Ji-geum-bo-da Deo Haeng-bo-kal-jji-do Mol-la
Ga-seu-mi Dap-tta-pae-ji-go Hwa-ga Na-go Nun-mu-ri Na
Nae-ga Mwol Jal-mo-taen-neun-ji-do Jeong-mal Mo-reu-ge-sseo
A-ju Tae-yeon-seu-reop-kke Naeng-jeong-han Cheok Ha-go Tto Ha-ji-man
Nae Ma-meun I-mi Ji-o-ge Tteo-reo-jin Neu-kki-mi-ya
Oh! Happy happy day!
Oh! Happy happy crazy tonight!
O-neul Bam Da-reun Sa-ram Man-na-myeon
Neo-reul Geu-nyang Ji-ul Geo-ya
Oh! Happy happy day!
Oh! Happy happy crazy tonight!
Mo-deun geol Da I-jeo Beo-ril Geo-ya
Neo-reul Ji-wo Beo-ril Geo-ya~
 
ENGLISH - Happy Happy

I knew this would happen since I first heard you speak
I feel your impudent expression and way of talking
I found the other woman who already had a place in your heart
I don't want to know anymore, I will forget you quietly
Oh! Happy happy day!
Oh! Happy happy smile!
If I meet someone else
I might be happier than I am now
My heart gets [bad word]  I get angry and tears start to flow
I really don't know what I did wrong
I tried to be very calm and cold
I try over and over but my heart already feels like it's in [bad word] Oh! Happy happy day!
Oh! Happy happy crazy tonight!
If I meet someone else tonight
I will just erase you
I know the feeling of meeting someone else
If I meet someone new
I want to treat them better than I did you
It will be hard for me to forget you, but time will take care of it
Like what I heard from someone, I want to believe it's a good experience
Oh! Happy happy day!
Oh! Happy happy smile!
If I meet someone else
I might be happier than I am now
My heart gets [bad word]  I get angry and tears start to flow
I really don't know what I did wrong
I tried to be very calm and cold
I try over and over but my heart already feels like it's in [bad word] Oh! Happy happy day!
Oh! Happy happy crazy tonight!
If I meet someone else tonight
I will just erase you
Oh! Happy happy day!
Oh! Happy happy crazy tonight!
I will forget everything
I will erase you