If you are wondering if it is possible for a man to cum through penetration in the anus, then the answer is a hard and loud yes! Even anal sex in heterosexual sex, men often prefer anal sex because the euphoric feeling is not just in the moment of orgasming or cumming but the moment they insert their long hard shaft in the sweet tight asshole. So, in gay sex, it is important for the cock to be extremely and wet and slimy for easier entrance into the asshole. The asshole of any person is tighter and dryer than any of the human hole-it is narrow and if not prepped properly, sex becomes rough. Obviously, anal sex refers to penetration in the asshole. For gay partners, the method of penetration where is clear absence of vagina is through anal sex.