Here's another memory, this one more recent than the last.
A woman I used to see (out of town now) interested me initially because it was obvious she really, really liked spanking. The subject came up innocently in conversation once, and she couldn't sit still. This story is about a later meeting with her.
That day I happened to be in a mood. She could tell -- and herself seemed a little more contrary than usual. When I told her to fetch her belt, which I'd used as an impromptu leash before, she refused petulantly. I was used to a little bit of this; I grabbed her hair, planning to slap her ass a few times and send her for the belt, but she kept getting out of the way, and not in a half-playful way, either.
After much jockeying, I ended up having to push her to the ground and put a knee in her back before I could keep her still enough to administer the spanking I'd planned, so I took out a little frustration in the process. As I said, just talking about being spanked excited her almost involuntarily, so an actual spanking, especially an energetic one, completely changed her demeanor. She got the belt.
When she returned, rather than putting it around her neck the way she liked, I used the free end to swat at her, telling her to take off any piece of clothing it touched. When she was naked, I made a loop in the belt, but again disappointed her -- pulling not her neck, but one of her breasts through it, tightening enough to hurt, then making her hold the free end of the belt taut.
Enter the highlighting pen, a bright pink one, which caught my eye on her table. Its cap was very rounded and smooth, so I took it in one hand and had her hand me the belt end and get on her hands and knees, then put her face to the floor. I tugged a bit on the belt, just hard enough to make her yelp and then backing off, then put it under my foot to keep a little pressure on. I leaned over her, slapped her once on each haunch, hard; she moaned. I slapped her again, harder and more centered. I probably added a few more, enjoying myself.