The context of the following conversation is Jesse was working for Edward Nigma. So, Jesse set Robin's case on fire.:
Robin says I didn't think that Jesse would take his job so seriously as to burn my case..
The friend responds What do you mean burn your case?.
Robin responds Jesse works for Edward Nigma and literally burned my case..
The friend responds Was he joking and pranking you or did he really burn your case?.
Robin responds He wasn't joking and I am mad..
The friend responds I would be mad too. I think he is losing his mind..