宅男宅女

homebody/shut-in

菜鸟

newbie/rookie/noob

纯爷们儿

macho man

大姨妈

period/aunt flo

山寨

knockoff/copycat

水货

smuggled goods

吃货

food junkie

电灯泡

third wheel

囧

embarrassed/awkward

牛

awesome

卖萌

acting cute