"Alternadudes" is a term used to describe a specific type of gay pornography. The word itself is a combination of "alternative" and "dudes." In this context, "alternative" refers to the subculture or lifestyle often associated with rock music and punk culture, while "dudes" simply means men or guys. So, when referring to adult content, "alternadudes" would indicate a gay porn video featuring men who embody the aesthetic, style, or attitude commonly associated with this particular subculture or lifestyle.