This may sound like a daft question, but DS is doing certain things repeatedly which we have said 'no' to quite firmly - for eg, pulling on the wire for the lamp, putting his fingers in the hinges of the door, spitting milk on the floor. Usually when we say no he is quite good and responds, but lately he is just laughing and doing it even more!
I have tried ignoring him, telling him off loudly, taking him away firmly etc but what else can I try? Shouted at him this evening really loudly and now feel mean