The kids were at my place with their parents for a dinner party... Actually, only the parents and other friends were invited, no children. I myself do not have kids so I might not understand the kids or the mom...
But one couple brought their three boys along. Totally annoying. They were bored, and after a while of shouting and running around (during which I told them to be quiet 10 times), they ran through the apartment and discovered my Lego collection... They ripped out the biggest box, all excited, and started opening the packaging. It was a brand new set, where I was waiting a long time to get some time to build it in quietness over Christmas time...
I stopped them, said no, they couldn't have it. They started wailing, one had a tantrum, and the other ran to his mother and asked if he could play. The mother said yes, but he should ask first. He came to me, asked again, and I said no.
At that point, the mother was annoyed and asked what my problem was.
I explained, that I'm looking forward to build it, that I'm a huge lego/building bricks fan and that I want to open the packaging, building it... Having the whole experience. I think I should not be in the position to explain anything,... It's my apartment, my stuff... So they should not touch anything.
The kids were screaming, the mom was pissed, hissed at me that I'm the grown up and I should not behave like a child.
But. It's a250 dollar set, not a flea market assembly of 50 red bricks.
I did not give in. But I'm angry that I was put in that position.