Let's talk about 20th century boy Let's talk about 20th century boy Let's go Gwenchaneun geu namjan jallan gabseul hasigo chakhan geu namjan jjijilhe Ajjirhan geu namjan chom mannan naldo oh no no dochipeihajane (silly boy) (silly boy) hopunge geun-go omneun jasin-gam iyul moreugetgo deche moreugetgo (silly boy) (silly boy) no goul jom bwara niga ottonji Nado ijen jebal jedero dwen namja mannabogo sipo You make my beautiful day You make my beautiful day nan niga nomu bujokhan-gol Baby baby you are my silly boy Musoun geu namjan saranggwa seutokingeul gubyolmot-hago inne Ajossi gateun no bammogeul ttemyon jebal ttam jom geuman heullyo (silly boy) Bulssanghe dapjang myot bon hejumyon jagil joahanda geujo obahago inne (silly boy) Oi obso ttande gabwa Nado ijen jebal jedero dwen namja mannabogo sipo You make my beautiful day You make my beautiful day nan niga nomu bujokhan-gol Baby baby you are my silly boy I do wanna thing for me you know Non jjajeungman nego iron nol wihe mwon-ga junbihedo tto hwanego Iyureul al su omneun naneun geujo noreul dallego Imankeum nan noryokhenneunde tto mwonsoriya nega noye seutokorani (norangeun mari an tonghe) Nega tto mwol jalmot-hennya (no cham pigonhada) Nado ijen jebal jedero dwen namja mannabogo sipo You make my beautiful day You make my beautiful day nan niga nomu bujokhan-gol Baby baby you are my silly boy Nananana~ You are my silly boy