可别忘了;你可给我记住;你给我老实点
and don't (you) forget it
可别忘了;你可给我记住;你给我老实点
used to tell sb how they should behave, especially when they have been behaving in a way you do not like
You're a suspect, not a detective, and don't you forget it.你是嫌疑犯,不是侦探,给我记住了。
释义来自《牛津高阶英汉双解词典》第 9 版