The Gräfenberg spot or G-spot, named after Ernst Gräfenberg, is a small area in the genital area of women behind the pubic bone and surrounding the urethra.
Stimulation of the G-spot (through the front wall of the vagina) is said to promote a more vigorous and satisfying orgasm, and is possibly the cause of female ejaculation. Such stimulation requires a somewhat opposite thrust to that required to obtain maximal clitoral stimulation via the penis, called "riding high".
Many sexual advice books encourage couples unable to reach female orgasm to consider G-spot stimulation as a sexual technique.
The term G-spot is also used by analogy as a slang term for the prostate gland in men, which may be stimulated through anal play or by pressing on the perineum (skin directly beneath the scrotum).