Definitions by senpaga

我日你先人 

It means “fuck your ancestors”, probably used to abuse others.It's well known by a clip from a famous Anti-Japanese TV series 亮剑（Liang Jian）,which has spread widely on the Chinese Internet.

山本，我日你先人
Yamamoto,I'll fuck your ancestors.

我日你先人 by senpaga March 24, 2021