Fingering refers to the use of fingers to stimulate the genitals. The clitoris has two to three times more nerve endings than the penis, making it a sensitive area for stimulation. The vagina may not have as many nerve endings as the clitoris, but certain areas of the vagina do respond to touch. Therefore, we could say the act of fingering is to use the fingers to stimulate the clitoris to reach an orgasm. The different types of fingering may include clitoral stimulation, vaginal stimulation, and anal stimulation.