My little lad has been home almost five months and has gone from strength to strength. He seems to totally accept and love me as mummy - in fact calls me a whole selection of names, Mummy, Mum, and Mother (said like a comedy cockney 'Muthar' - he is not a cockney!). 
Likewise, he loves his dad and totally loves and accepts his sister, our dd.
Preschool is going well, he is going in OK, twice a week, no tears now (after the first few weeks of tears) but lots of smiles and kisses when I collect him.
He is mostly a dream to parent 
But as he is now home a while I am noticing alongside the good stuff his behaviour has got 'worse' in terms of 'naughty' behaviour, defiance etc, and just generally not doing what I ask etc.
So for example today we had breakfast in the lounge as a treat (normally it is up the dining room table). TV was on (Horrid Henry the movie) and all I required was my two kids to sit on their little chairs up the big coffee table to eat cereal and drink milk rather than on the sofa with the cushions and blanket etc (because of the potential for spills and stains etc!).
It's often dd who causes trouble but today she was fine and it was ds! Lots of complaints from ds, shouting and screaming etc. He wanted to be all snuggled on the sofa and not bother with breakfast. Eventually we got there but not before he had had some time out of the living room, with me, and shouted so loud I had to cover my ears.
He is also occasionally trying to hit me.
His most common comment, when he is upset and I ask why, is "I don't know." 
I want to be sympathetic, empathic etc but at times the screening is so loud I have had to leave the room and be in plain sight. Today I felt it was not right to leave the room and leave him screening in front of dd so I made him leave with me and we both sat on the steps and I tried to explain again what I wanted him to do. I do not feel it was unreasonable to want him to have a breakfast and drink at about 10.30!
What does worry me slightly is that when his behaviour is really 'naughty' I feel very cross and I kind of want to switch off and say OK just get on with it. I feel very negative emotions at those moments. I can't really say they are any different to the feelings I have about dd (so it is not about him being adopted). it just feels I am being taken for a fool!
I am quite fair, I think, not exactly equal treatment for kids but age appropriate equal, sharing treats and food and toys and stuff. I feel I am always trying to be a peace maker, help dd and ds get on, thinking of fun things to do etc. Not being hard on them when they make a mess (thy love making a mess in the garden) and I feel I take all this but actually only ask for really the basics in return!
Yet sometimes it gets a bit too much and I feel cross. 
Maybe I should be really strict and they would see what it was like!
But I am not strict. I am what might be called a liberal parent, in some ways, I feel my demands are few, others might disagree, my dh is even more laid back than me!
The kids often have untidy bedrooms, messy faces, messy hair etc! And although I point out what would be good and helpful, I try and let them take the lead. Recently we went out with friends for a pub dinner. DD complained a lot that she did not want to go and when we got there they both had a total blast! There was a fun thing in the garden, the food was great and there were lots of other kids and they all played together. They were like bottles of coke that had been fizzed up, all full of fun.
So I feel they have a nice time and I made no fuss at all that they got totally muddy etc.
Part of our journey to and from the pub involved walking close to a busy road. I insisted on holding 4 year old ds's hand all the way there and back just by the road bit. He was incandescent with rage at the indignation of being made to hold my hand! He wanted to walk with dd but I felt at 10 she is not old enough to be responsible for him by a busy road. It was my responsibility so I had to just hang onto his arm and insist again and again 'It is not safe to walk alone.' 'Your sister is not a grown up so I need to hold your hand' etc etc. At one point he nearly pushed me into the bloody road!
I guess it was just a fact I had to be firm because the alternative of him falling into the road was too real a possibility but it was frustrating because when he first came to us I think he would have accepted he needed to hold my hand by roads!
So really I guess I just want to know this is all normal and hopefully the behaviour will level out and not keep getting 'naughtier'.
I am finding the more TV they get and the more open and non-strict I am the more naughty behaviour I get so I am wondering if I really do need to be a bit stricter. But as a mum to a dd with dyslexia and a newly adopted ds I certainly do not want to be strict. I want to be empathetic.
Any advice from parents, especially whose kids joined their family by adoption, very gratefully received.
Please do not advise I read this or that book! I too am dyslexic and I really struggle to get reading done even though I can read perfectly well.
Please go easy on me. I have been through the range of emotions for last 24 hours of how boisterous my ds has been!
I am rightly proud he can cope with so many situations and seems to have fun but I wonder if it is too much for him, because of the behaviour. If behaviour is language is he telling em we are doing too many fun things?
We really only have a few things we do, a visit to a friend and then maybe two outings or activities a week which could be a visit to a place like a wildlife sanctuary or to a park or swimming pool. Really the pub dinner is only something we do about four times a year!
Thanks. 