Fingering is a type of sexual activity that involves penetration using one or more fingers. Fingering can involve inserting fingers into either the vagina or the rectum, and it is sometimes a part of mutual masturbation
Fingering is considered to be a relatively safe sexual activity, but it can transmit certain STDs. To make fingering safer, it is a good idea to wear a latex or nitrile glove or a finger cot.
Both men and women may enjoy fingering -- either performing it or receiving it.