"Get my paintbrush!" she said. I crawled on all fours and fetched a two-foot fiberglass rod with a handle on one hand and a heart-shaped flap on the other.
You might call it a crop.
She swung it hard. She hit me on the back. Ow. I didn't move a muscle.
"You were so good when you came for me! I know you like this!"
She hit me on the ass. "I like the sound it makes!"
She kept hitting me all over. "Oh, there's a spot I missed."
"Wow, your back is covered with hearts. It's beautiful!"