Squirting... is a mystery of the female body. The most common squirting is caused by fingering the G-spot (probably the area behind the clitoris) as it is rubbed from the back to the front. It is also common for squirting to occur at the same time as climaxing with a vibrator. There is also the case of squirting when the tip of a penis is rubbed against the clitoris. Some people are more likely to squirt than others.