Ratina

Your coworker who always tries to get you in trouble or annoy you by framing you, playing the victim, or by being spiteful. You've had enough of her and her shenanigans, so you decide to do something about her. You can prank her, play her by her own game, trip her, drive her to insanity. Whatever. The choice is yours. (The scene is meant to take place in an office, but you can change that if you please)