"I'll jump to my conclusions, but I'll leap to your defense" Jonatha Brooks

Isn't this particularly true with siblings? My sister and I are great friends. That doesn't mean, however, that we see eye to eye on everything. When we are together for more than about a day we start to get on each others nerves...I'm too bossy and she's too sloppy. And when we are upset with each other we both jump to conclusions about how the other feels and what they are thinking. But if anyone tries to mess with her (particularly a guy) I am the first and most ferocious attacker. And she has done the same for me. My brothers fall in this same catagory. There isn't anyone in the world that I can get mad at as easily or that I would fight for as strongly.