Hanging around at night with my brother

I wrote this entry because I think is too strange that a guy call his little brother to hang around with him and his friends, and that's exactly what Nacho, my old brother did this holidays.
I was watching a film at quarter to twelve when my brother call me saying: "do you want to come now to hang out with me and my friends?" and I said yes. I've just opened the door when my granny appeared and said to me "I must call your parents to ask if you can go out at night" I said that I could but she didn´t give me the keys, so I leave her like that.
We went to different places, first to a heavy bar, later to a square with a lot of young people talking, drinking, smoking... There my brother's friend saw more friends and we talk about a lot of things, a lot of time. Later, theese guys leave the square and my brother started talking to random people, so his friend and me entered to a disco to warm us up and he ask me for my marker, I said: "are you going to write here?"
and he answered: "yeah, in the bath", so I went with him and we saw the bathroom full of marks. We write our things but someone notice the owner and when I was ending, he catch me. I though he were going to hit me but he asked me for the DNI shouting and I said I hadn´t, so he kick me out. So, we go for a walk to talk and tag until five o'clock, when they said that they were leaving and I go home. That was the moment when I though "I haven't the keys", so I called my mother and you can imagine the rest...