Head is the act of having someone either
eat you out or suck your dick. If you intend to make the person finish, you'll be at it for about 20 minutes so choose
a good spot with limited eyes. Guys first like to receive head from a girl but if they decide to give some in return, they'll find out they like
giving head. Fun fact: Guys see girls as ugly after finishing due to the fact that when they used to watch porn, they were used to top notch actresses.