My parents have looked after DS once a week since he was a baby and I went back to work, and over the summer holidays they've had him and younger DS two days each week to help us out. They've always been lovely to both kids, take them for days out, give them treats, play with them, etc and admit they spoil them a bit.
But the last couple of times they've been DS has been really grumpy, going silent, being really uncooperative, or just being rude. My dad phoned me last night to tell me that when they looked after him on Monday and Tuesday this week DS had been absolutely vile to them. To the point my mum was in tears. Apparently he was grumpy and sullen the whole time, everything they did was wrong, eg they bought him a lemonade and he said he didn't want it he wanted a Sprite. They offered to buy a pudding for him and DS2 to share and he refused to share, and kept moaning at them to buy him a pudding of his own (which they did, I wouldn't have if he'd been like this). They took him to the park and the whole time he kept saying how rubbish it is. So they stayed at home the rest of the day and he got cross because they wouldn't let him sit at the computer all afternoon. Said their house was rubbish, the books he'd got there were rubbish, etc (even though he can take as many toys and books with him from home as he likes and he never does!)
So my dad said it's got to the point where my mum doesn't want to look after him any more. And I completely understand, why would you want to spend time with someone who is continually ungrateful when you try to do nice things with them. I've said that's fine and that we're really sorry, and if they don't want to look after him we'll make alternative arrangements. So they're going to have a think about it. I feel so bad for them though, they're so lovely and it's not fair for them to have to put up with this.
DP and I have both spoken to DS, telling him this behaviour is unacceptable and if he acts like that again he'll lose priveleges, and if my parents do decide to look after him next week, any sign of that behaviour and he'll be straight home and spend the rest of the day in his room with no toys, tv or computer.
He's been a bit unpredictable with us lately, kind of up and down mood swings, but he manages to snap out of it after a while. I think my parents are more lenient so they let him get away with more, but they do tell him off when they need to.
We've tried to find out if there is something bothering him particularly at my parents house, and he said there is something that makes him sad but he refuses to tell us what. In previous times when he's been upset about things, he's been reluctant to tell us too, and it normally turns out to be something like 'all my friends have a phone apart from me and is not fair'. But we have clue what is wrong lately.
I'm wondering whether it is early puberty hormones or something, making him overly emotional, but that still doesn't excuse the way he's been acting towards my parents.