0036名無しさん@英語勉強中 (トンモー MMa7-xfTT)垢版2018/04/17(火) 15:11:09.23ID:RGV0P/QZM >>36 > today i knew "idk" is an internet slang and it refers to "i don't know". > i took a small one step forward to brush up my english skills... What about a.k.a.?