Daughter refusing to hold onto the handrail when going down the stairs. She would run up and down, sometimes skipping steps and scare me out of my head. I told her over and over that it would only take one misstep and she'd fall and hurt herself. She still didn't listen. I got more graphic and yelled at her one day, "If you don't start using that hand-rail, you'll trip, fall down those stairs and crack your head open on the tile! BRAINS EVERYWHERE! And I won't be able to put you back together. Once the brains are on the floor there is no five second rule, we'll have to put them in the trash! USE THE HANDRAIL!"
One day, she hopped down the first two steps of the stairs and then missed a step and went head over heels all the way down to the bottom. It was like watching a horror show. You could witness but not intervene. I raced over to her to make sure she had not broken her neck. She was shaking and terrified after her quick trip downstairs but was otherwise unharmed. She didn't even get a bruise. Once I determined she wasn't hurt, I gave her the loudest, longest biggest rant of an "I told you so" that I think has ever come out of a mother, ever. (I think it was my body's way of purging that shot of adrenaline I got watching her tumble.)
After I wound down, I hugged her tight and then told her to go upstairs and play. She walked up the stairs rather than skip or leap or run or hop and she HELD THE FREAKING HANDRAIL!
She has since gone back to running up and down the stairs but at least now she keeps her hand on the rail just in case. Sometimes I wonder if that kid has to figure out every painful lesson herself...