Like father, like son 有其父必有其子

Son: Papa, what's the meaning of " Like father, like son"?
Father: Bastard. What another scandalous thing have you done in the school?

儿子：爸爸，“有其父必有其子”是什么意思呀？
父亲：狗崽子，你在学校又干什么见不得人的事啦？