Answer:
Great question. First, we must understand that Bee is not, in fact, an actual male. Bee was first born as a rare breed of pokemon, known as female. When Bee realized that he was not even a Bee, it was all too much for him. Bee moved to a tropical resort in northern Scandinavia and became an illegal gaterade dealer. So, to answer your question, Bee faces no challenges in proving his manness to each of his male children, because he has no children and is not a man.