RIGHT?! I used to RP on tumblr but, UGH, it rapidly becomes impossible to sort through threads, even with awesome tagging systems. It's excellent for resources and for loose gif chat RPs though.

Haha, YESSSSSS. Katie will be [s]homicidal[/s] cranky as heeellll.

My take on violent!Katie was totally inspired by one of the best Bell/Flint fics I ever read, a million years ago during my livejournal days (oh god I'm dating myself here). I think it was called She Scores and it was one of the most hysterical bits of fanfiction I've ever read. It's totally ridiculous and tongue in cheek and smutty goodness.
BUT YES. It totally won me to the ship and convinced me that Sassy and Vicious Katie is the Best Katie.