Can't sleep tonight neuj-eossne ja-ya doeneunde meolis-sog-e yang-eun beol-sseo da sess-eo eo-tteohgedeun jamdeul-eo bolyeo haessdeon sya-wodo tto dasi haess-eo cheonjang-e ne eolgul-i ja-kku geulyeojigo nun gam-eumyeon kkeutnabeolin uli storyga damgin chaeg-i pyeolchyeojigo neon tteonagan hu-edo nal ileohge goelobhyeo eo-jjeodaga naega ileohge-kkaji goelo-wo hage doen geonji naega mwol jalmoshan geonji uliga wae ibyeol ingeon jido moleuneunde I don't know what happened Cause you are like caffeine nan bamsae jam mos deulgo simjang-eun gyesog ttwigo geuleodaga tto nega neomu mibgo Like caffeine meollihalyeogo haedo ij-eobolyeogo haedo geuleol suga eo-jjeol suga eobsjanh-a You're bad to me, so bad to me Oh girl you're like caffeine You're bad to me, so bad to me Oh girl you're like caffeine You're bad to me, so bad to me Oh girl you're like caffeine You're bad to me, so bad to me So bad to me, yeah sum swil ttaemada nega geulibda gat-eun haneul alae issda saenggaghani-kka deo michinda ileomyeonseo tto nan neol mos noh-a jeogi changmun bakk datuneun yeon-indeul-i bo-yeo jinan uli moseub gat-a nunmul go-yeo ibwa-yo geuleoji malgo geunyeol gamssajwo-yo nal bwa-yo ileon naega eo-ttae bo-ina-yo neol butjab-eul gihoedo naegen jul su eobs-eossni geuleohge swibge kkeutnabeolil gabyeo-un sa-in ani-eossjanhni anim nae chaggag-in geonji uliga wae ibyeol-in geonjido moleuneunde I don't know what happened Cause you are like caffeine nan bamsae jam mos deulgo simjang-eun gyesog ttwigo geuleodaga tto nega neomu mibgo Like caffeine meollihalyeogo haedo ij-eobolyeogo haedo geuleol suga eo-jjeol suga eobsjanh-a ileohge neol mi-wohadaga tto nan hamkkehadeon sigan dol-abomyeon us-eum-i na-wa eo-jjeomyeon midgi silh-eun geonjido molla ani ijgi silh-eunga bwa ganjighago sip-eun geonga bwa Cause you are like caffeine nan bamsae jam mos deulgo simjang-eun gyesog ttwigo geuleodaga tto nega neomu mibgo Like caffeine meollihalyeogo haedo ij-eobolyeogo haedo geuleol suga eo-jjeol suga eobsjanh-a You're bad to me, so bad to me Oh girl you're like caffeine You're bad to me, so bad to me Oh girl you're like caffeine You're bad to me, so bad to me Oh girl you're like caffeine You're bad to me, so bad to me So bad to me, yeah