I role-played with a girlfriend wants where I pretended to be a bad boy admitted to a correctional private institution. I was told that if I didn't submit that I would be sent home and things would be worse.
She played the role of a strict Director and I played the role of an unrepentant student, probably college age. I was sassy and rebellious to her.
She scolded me and told me that I could submit to her or she was going to throw me out. I agreed.
She had me take all my clothes off and produced a heavy wooden paddle and in her words "spanked the tar out of me." It did really hurt and I did start to give in completely and begged her to stop, telling her that I was very sorry and would do better.. She told me that that was progress, but she wasn't nearly finished with me yet.
She then took me into the bathroom and made me lie on the floor and filled a 1 gallon Klystra bag, made me lie on my back and fairly roughly inserted the nozzle. She started the flow and held the nozzle in and spanked me on my front while I took it. I was very pleased that I took it and that it would be over. Well, it wasn't. She filled a picture with more water poured it in and restarted the water until I was literally crying. Somehow, she decided I'd had enough and stopped and left.
That was a very long time ago, but it actually did happen just like that. It does seem hard to believe, even for me, that this actually happened, but it did. I'd like to find a way to reexperience it, but it probably wouldn't be the same.