I'd probably also be a witch - maybe neutral, so I could summon some people who humiliated me years ago and send bees to attack them, and maybe also make them act like chickens and throw up.
Edit: I'd also maybe go to College, steal the Cowplant and Bone Phone, and resurrect some relatives, and maybe drink the people who have hurt me in the past. And then resurrect them as zombies. And then drink them again, and repeat. Though I'd probably also use the Simvac after doing some things that make me happy, and steal some much-needed skills from other sims that I dislike. Probably not townies or Pascal Curious though - I'd likely try to woo him :D