why are you so nosy? then blab your mouth

I have a friend that's really cool to hang out with and he does help out when I'm in need. He has one huge problem though. He is probably the nosiest person I've even known. Every time two people is having a conversation, you can see him zero in his ears on what they're talking about. I mean it's good to know things, but not when you have nothing to do with it and decide to tell the world with your big mouth too. This is a bad trait and it can definitely cause a lot of problem in a friendship, or even if they're not friends. So never should you ever be nosy, and blab your mouth. Especially when the information is none of your freaking business.    :)