Don't know why he is concerned, but he is now just realizing he has no genitals considering he is just floating body parts.

Now here you are, sitting on the couch and watching him pace back and forth while babbling about it. "Explain these!" He shows you his floating hands. "How is it possible? I have hands and not-"

He cut himself off, looking at the bottom of his torso and the realization hit. Now he is just running in circles screaming and panicking