I know arm twisting. My brother and I were about one year apart in age. When we were younger, I swear there were times he would have twisted my arm 360 degrees if it could. :-) To think that all I had to do was say, "uncle." Nope, not me. He'd say, you'd let me break your arm, wouldn't ya , sis? He gave up before I did.
I have an older brother, too. I know what you're talking about.