I'm struggling with this. We have DS who is 2.8 and a 14 year old. The toddler is obviously up to all sorts of tricks. I'm generally just saying no, and trying to distract him. He understands very well but does not talk yet.
The 14 year old loves playing with him and they're very close, but the play is a bit hectic, lots of screaming around and inevitably ends with him shouting NO THAT'S NAUGHTY quite loudly and sometimes even telling him he's going to sit him on the naughty step. I don't use the naughty step although I do sometimes take him to another room to calm down.
If I tell him (he's not actually our DS but has been with us for 2 years and will stay with us now) he gets quite angry and says I 'just let him get away with everything'. I want them to play together I just want him to leave the parenting to me.
How do others deal with this issue?