The anterior fornix erogenous zone (AFE or A-Spot) is a female erogenous zone that when stimulated can lead to rapid vaginal lubrication and arousal, sometimes without any other form of stimulation, with continued stimulation resulting in an intense orgasm. It is located at or near the deepest point on the anterior wall of the vagina, above the cervix, where the anterior wall of the vagina starts to curve upward. The posterior fornix is also believed to be an erogenous zone, called the ‘deep spot.’
Some believe that the AFE is the anterior fornix itself, but some sex experts believe it to be a degenerated female prostate (a theory that many have already applied to the G-spot and the Skene’s gland) or the area where the vaginal nerves connect, which is thought to be near it. One other theory is that it is the vesicouterine pouch, due to its proximity to the supposed location of the AFE zone and the supposed erogenous qualities of the rectouterine pouch. The AFE redirects female ejaculatory fluid, which is expelled from the Skene’s gland during G-spot orgasms, and turns it into vaginal lubrication. Because stimulating the AFE zone causes this mechanism and creates an erotic sensation simultaneously, full arousal occurs very quickly.
The Daily Omnivore 