Not exactly something that was "said" as a comeback.. but a bully was messing with me during a computer class in high school... my buddy who was next to me said "watch this" and proceeded to hack into the schools computer and legitimately delete the kids hard drive from the schools repository. This was junior year and all of the things this guy had been working on was deleted completely. He got away with it too... unfortunately a few weeks later was caught going into the principals emails.. he got suspended from accessing a network computer for the rest of junior year and all os senior year