Eep fucks Dawn, but Dawn tops.

It took Dawn's help to strap it in perfectly (the invention was still in its testing phase after all), but they were able to fasten it tight enough on Eep. It was kind of like her usual under-pelt... if it stuffed itself inside of her so thoroughly that it stimulated every contour of her insides with every movement.

Eep lay back down on their bed and Dawn climbed onto her, lining up the other end of the strap-on over her entrance before setting down on it. They both took a second before Dawn started moving.

While Eep grabbed both halves of her butt to better control the rhythm, Dawn grabbed both of Eep's breasts, both to keep her balance and because she liked touching them.