I made it to page 11 and realized the MC is too dumb to care about, and DNF the book.
So the MC and his trusty, busty sidekick go to the morgue to look at a recently deceased individual. They con the coroner into letting them see the body, which proves to have a bite mark on the body's manhood, which is of course fully erect. Then the body reanimates and kills the coroner. Busty sidekick stabs the now animated corpse, but misses the heart and falls on her tight backside. The MC, being 5 feet away, decides he can't cut the body's head off with a knife, so instead of trying for the heart like his partner, he cuts the body's engorged manhood off. Which just really aggravates the reanimated corpse.
Why the MC decided cutting off the manhood instead of going for the heart is beyond me. If you can reach the manhood, you can reach the heart, but the manhood made more sense to this goof.