"Give it up, mother-," he threatened. "Give it up." (Para. 2)
Meaning: He asked me to give my money to him or he would do something harmful to me. The word "mother" is used to express a slight with radical anger or annoyance. It is a very rude and offensive word if used in this way.
n. 烦恼,生气,令人讨厌的人或事情