No offense, but I can't see Marco doing that to Ax.
Don't get me wrong, the idea of Ax discovering human sexuality is hilarious, and even probable within the canon of the series. He's an adolescent male, alone, with no women around...not far fetched at all, actually. Not anything that Scholastic would ever publish, but it's an interesting story.
I had never thought about Ax having human sex, but I think there should have been a different beginning other than having Marco oscillate Ax. Maybe Ax accidentally discovers Playboy TV and wants to find out more, or he morphs Rachel to experience being a female, goes to the mall, and finds a male who is attractive. Who knows? Slightly revolting beginning, hilarious concept, hope this gets finished! I don't mind waiting a long time between installments (I read Megatokyo, I've gotten used to it) but not having it ever get finished would be a waste. Keep up the good work! 10/10 for originality, 7/10 for execution and 11/10 for shock value. 28/30 = A-. I love it!