捣蛋鬼别捣蛋
[dăo dàn guĭ bié dăo dàn]
Literally translating to 'naughty spirit not naughtying'. A self-deprecating name that acknowledges mischievous behavior while simultaneously renouncing it, hinting humorously at someone trying to reform from troublemaking ways or wishing to present an opposite side to their usual antics.