Geurae na chwihanda uri
Haega ddul ddaekkaji mashija
Happy happy birthday
Geurae na chwihaetda nunmuri
Mareul ddekkaji mashija
Happy happy birthday

Seworeun nal jjutgo dageuchyeo
Galsurok sokdoga buto
Balgeoreumeun sareoreumeul godne
Geumi ganeun neowa naui jeolmeumeul
Geonbae hae jeolbyeoge seon jejari na
Oneuldo sureul mashinda
Hanjan chaewo chughahaejwo
Naeil ui mannamboda manheun
Eoje ui ibyeol ijen maeil ibyeol
I guess it's human nature
Sumshwineun joe ui beol sutjaman neureoganda
Neul jejari na ijen suri narul mashinda
Hanjan chaewo chughahaejwo

Geurae na chwihanda uri
Haega ddul ddaekkaji mashija
Happy happy birthday
Geurae na chwihaetda nunmuri
Mareul ddekkaji mashija
Happy happy birthday

Geujo seonmuleun don ibjanggwoni doen sul
Nae saengileun norigongwon
Ilnyeon naenae eobdeon sonnimdeuri
Gadeuk chado teong bin chowon
Seulpeumman gadeuk chan deulpan
Seonggongiran jeo saneul deungbanhagi
Wihan tamheomjung
Oneul ui chugbaeneun ddo dareun chulbal
(Ya saengiri mwodesun ya)
Kkum ui nalgaereul kkeokkeun chae ddo
Harureul beone seoroga suljaneul geonne harusari
Gateun insaengeul wihae geonbae
(Ya mashigo jugja)
Imi jugeun dut munanhaejyeo ganeun salmjocha
Buranhaejyeo oneul harumankeumeun jebal nal chughahaejwo

Geurae na chwihanda uri
Haega ddul ddaekkaji mashija
Happy happy birthday
Geurae na chwihaetda nunmuri
Mareul ddekkaji mashija
Happy happy birthday

Happy happy birthday to you.
Happy happy birthday to you.
Happy happy birthday to you.
Happy happy birthday to me.