Tā / míng / zhī / dào / dà / jiā / hěn / máng / hái / gù / yì / chàng / gē / shí / zài / yǒu / diǎn / qiàn / zòu

他明知道大家很忙，还故意唱歌，实在有点欠揍。

He knew everyone was busy but deliberately started singing, which was really asking for a beating.