When you are at the paradise of sexual pleasure and ejaculation, it is hard to stay still as this is one of the hardest areas of a female that gets stimulated most. The main reason why it gets so hard is because a girl's vagina has a thin lining which makes it easy for a man to enter and stimulate her clitoris. There are so many girls out there who say they cannot get hard unless they have had sex with a guy who has the size of a walnut, because the vagina gets so big. Well, I am here to tell you that this is not true, and here is how you can turn your girl on in no time by cunnilingus..