Donnas was enjoy himself, with one hand wildly stroking and jerking off his penis, while with second hand he massage his breasts.
He moans with voice, that is deeper than Donna, but also higher than Jonas, it like something in between:
"Why...it...feels...so...GOOD!"
He feels not only male arousal, but also female, and since Jonas never felt woman arousal and Donna never felt how male pleasure feels, Donnas pleasure is even bigger.
"So...strong....so...sexy...so...HOT!"
Thanks to Donna influence in Donnas, it is like Donnas was aroused by his own manly body, yet also some of Donna female traits, like breasts, was also giving more to Donnas own arousal, probobly by Jonas own influence.
Two horny young adults, boy and girl, fused together, also adding that fusing itself was making fusion aroused, was making Donnas very, very, very horny.
After few moments of wild masturbation, Donnas felt that climax was close.
"I....CUMMING!!!!"
Then, not only Donnas penis released huge load of cum, but Donnas also ejaculated from his vagina, giving him double pleasure, from male and female side.
Donnas breathe heavily after this, he felt good and tired, but somehow, after few moments of rest, his penis was once again erected and hard, ready for more. Donnas also again begin to feel horny and aroused. Then he said with smile:
"Wow, I'm aroused once again, it seems that being boy and girl in one package, means almost endless arusment. Well, that's fine by me, let's see how many times I can climax in a row."