User blog comment:Zebest2008/Blog 1st/@comment-7387716-20130411143358

(Belated) Welcome to the RWBY wiki! Make yourself feel at home; you'll get better in English, just keep using it. It all comes down to practice and frequent use.

Regarding about what you mentioned, maybe one of the character not seen in the image could be doing something foolish or stupid (harmless of course, but in all still pretty annoying) that earns him/her Weiss's insult. Weiss could be a little irritated about someone's actions and does not really meant that she 'wants' to kill someone literally. That's my interpretation to Monty's tweet. Unless I see any hard evidence that Weiss really wants to kill someone, I don't think she meant it quite literally.