I know it's your birthday So junbihaessji seonmul-eul I know you're with your girlfriend mwo-ya geu eol-tteun pyojeong-eun? Didn't know I was like this bunmyeong gyeonggohaessneunde mae-unmas-eun aju jageugjeog-in mankeum nan dwi-kkeutdo kkwaena gildago ilbuleo neo-ui geom-eun sae chaleul bag-abeolil geo-ya kkamjjag nolla naelin geunyeo jali-e anj-abeolil geo-ya ige mwo, geulae mwo, geunyang jeulgineun geo-ya nollal geo eobs-eo peullaen-eun ijega sijag-ini-kka man-yag yog-eul hamyeon hanbatang us-eobeolil geo-ya gwagyeoghan tensyeon-ui dugeungeolim-eun hangsang neul jeulgeo-uni-kka geulae mwo, ige mwo, what? (Yeah) meoljjeonghan nun-ui warped view kko-yeobeolin geu brain wrinkle eonggeojuchumhan miso dwi geu waenji lala, geu waenji lala meongcheonghan maltun fake mask naleul swibge bwassdamyeon, whoa aju jalmos geollyeoss-eo Because I'm psycho (Did you know I'm psycho?) Did you get what kind of bitch I am? gajil su issneun geosboda eolyeo-un geol joh-ahae geuge don-ideun loveideun nae ap-e muleup-eul kkulhge mandeulgo nan geuge heungbundoeji hyeonsil-eul musihago bonneung-e chungsilhago neul jeongdab-eul uisimhamyeo geunyang kkeullineun geos-eneun eogjileul buline gwansim-i eobs-eo jal nagandan muli-en nun-i kkwae nop-a, nan ujuleul nulillae chaghage charmeun eolyeobji, nah na-ppeun mam-eun makes me hot meoljjeonghan nun-ui warped view kko-yeobeolin geu brain wrinkle eonggeojuchumhan miso dwi geu waenji lala, geu waenji lala meongcheonghan maltun fake mask naleul swibge bwassdamyeon, whoa aju jalmos geollyeoss-eo Because I'm So bad, I'm crazy mosdoen agmaleul samkin chae meoljjeonghi haluleul sane, yeah I don't know who's real me kkeut-eobsneun sangsig-ui bakk-e ban-jjog-eul gadun chae Maybe I'm psycho