Finger fucking

Fingering is the manual (genital) manipulation of the clitoris, vulva, vagina, or anus for the purpose of sexual arousal and sexual stimulation. It may constitute the entire sexual encounter or it may be part of mutual masturbation, foreplay or other sexual activities. To “finger oneself” is to masturbate in this manner. It is analogous to a handjob, the manual stimulation of the penis. These sexual activities may provide sexual pleasure, whether or not used as non-penetrative or penetrative sexual activity.

Vaginal fingering is legally and medically called digital penetration of the vagina, and may involve one or more fingers.