I don't really have a positive story about sore behind from spanking paddling as it involves a form of violence. In the past, there were tales of children in strict households or schools getting paddled and having a sore bottom as a result. But nowadays, we focus on positive discipline methods like positive reinforcement, communication, and setting good examples rather than using physical punishment.
Spanking is a form of corporal punishment which is not acceptable in many modern societies. However, in some historical or fictional contexts, there might be stories. For example, in some old - fashioned school settings in stories, a naughty child might get spanked with a paddle, and then they would have a sore behind. But this is more of a thing of the past and not something to be advocated in real life.
There are some fictional stories where in a very traditional or even a bit of a backwards - thinking community, a misbehaving child might be punished with a spanking paddle. This would lead to a sore behind. But in the real world, most countries have laws against such forms of corporal punishment. It's important to note that using positive ways to educate and discipline children is far more effective and ethical.