1. finger fuck - Noun
2. finger fuck - Verb
finger fuck (plural finger fucks)
(slang, vulgar) The act of using or inserting one's fingers into another person's genitalia, anus, or other part of the body to stimulate them sexually.
finger fuck (third-person singular simple present finger fucks, present participle finger fucking, simple past and past participle finger fucked)
(slang, vulgar) To insert a finger into a person's genitalia, anus, or other part of the body to stimulate them sexually.