Monkey See Monkey Do, Mindless Imitation
noun, expression
If 真似 is imitation and if a monkey is doing said imitation, that's summed up by the saying: monkey see monkey do. This refers to when someone does a mindless imitation of others without any real thought, so is often used when criticizing people.
さるまね
The readings are 猿 plus 真似 put together.
猿真似をするのはよせ。みっともない。
Stop just mindlessly doing whatever others do. It's pathetic.