Nightfall is a perfectly normal response of the body in response to sexually explicit dreams, which are also absolutely normal. As far as penis size is concerned, the average size of the Indian male is between 3.5 - 6 inches when erect. If your penis size falls within that range, your penis size is average. Even if it is smaller than that, there are always ways around a smaller size. Bear in mind that you do not need more than 1.5-2 inches to satisfy your woman. Good luck.