I hung my best friends little brother on the top bedpost of his bunkbed, by his underwear. It was funnier than anything I have ever seen, him dangling upright in his drawers, stretched to his neck.. He bawled for 5 minutes before we took him down.
The worst I ever did to my little brother was hold him under water in the pool or once I told him that there was candy in the wall outlets. It was funny watching him get zapped. My sister let him puff my moms cigarrette when she got up to dosomething. He ran and put a washcloth in his mouth, now he's a pack and half a dayer.
I think I did more but cant remember right now.