The voice and rhythm might be too consistent, although fantastic. There is also this odd presumption that masturbation is an act of betrayal or something to be ashamed of, but I guess it's presented as complicated in the book just as it is complicated in real life, the dynamics between pornography and self-pleasure and what constitutes moral porn. For the Speaker in these poems, there is a racial betrayal/layering involved in their view of whiteness as a "paradise of flesh," an attractive feature, that invites feelings of guilt in the Speaker who feels he is betraying his people. It takes a lot of courage to write and publish about a topic like that, the self-exposure and whatnot - but I think I'd like to see other ways of talking about masturbation rather than just as a thing to be ashamed of (although, the same here is more interesting than resulting just from a sense of sin of adolescence).