Dio giggled as he heard her make a noise. Oh good! She was having fun too!
And then suddenly his legs were no longer touching the earth. There was a look of pleased surprise on his face as he fell. Reaching out to try to stop his downward motion, he grabbed onto the closest thing at hand. In this instance, that was his sister's arm.
Though he landed with a squish in the mud, Dionysus was far more interested in the soft, squishy, warm thing that was smooshed up against his face. Was that a breast, or a buttock? Something else? Whatever, Dio rolled to the side, taking her with him in a slippery tumble of mud-covered skin.
"Oh!" he exclaimed when he could see more clearly. "It was a leg. Lovely leg. Not very good for wrestling though. Come, come, sister, you should know better."