脫褲子放屁

辞典解释脱裤子放屁tuō kù zi fàng pìㄊㄨㄛ ㄎㄨˋ ˙ㄗ ㄈㄤˋ ㄆㄧˋ （歇后语）​多此一举。 如：「你做这件事简直是脱裤子放屁──多此一举。」英语 lit. to take off trousers to fart, fig. to do something absolutely unnecessary, fig. to make things too complicated