As I get older, it has been made very clear to me that only children are at a distinct disadvantage when it comes to parenting siblings. I've been saying this for a while to people I know. And here are some statements that seem to pass my lips daily:
"Why are you touching each other?"
"Why are you smiling at each other?"
"Why are you making faces at each other?"
"Who's making farting noises? Both of you stop right now!"
"No means NO! Now stop doing that to your brother."
"Why do you BOTH need the same toy. Just take turns."
"Ask each other nicely for that instead of ripping it out of his hands."
I realize that all the parenting books, of which I have read most, tell you it's pointless to ask the "why" question. Your sinful little sweet heart doesn't know the reason behind his actions. You just need to deal with the consequences and help him to make better choices.
I need some help in negotiating between brothers!