I know what your saying, as my brother was 4 years older than me. One day I was over my friends house, and they had a wooded area across the street, a ravine. I was about 10 yrs old. We would go in the ravine and catch snakes. Of course at the bottom of the ravine their was a body of rushing water, about 20 feet deep, that emptied into an huge opened-mouth sewer. Close to the bottom of the ravine, we saw a football. Wanting to impress my friends, i voluntered to get it. They warned me that i shouldn't go down, but I just knew i could pull it off. I started my treck down the 40ft hill, got about half-way down, and slid right into the water. I didn't even know how to swim. Still can't. I thought i was gonna die. My friends were at the top, bursting with laughter as I screamed like a baby. Finally one of them dove in and pulled me to safety.