Fucking
Sex play involving repeated insertion and withdrawal of the cock in either the cunt (vaginal intercourse) or the ass hole (anal intercourse), by extension doing something similar with the cock in other orifices (for example, face fucking, a particularly intense form of fellatio) or using other objects in the cunt or ass hole with a similar motion (for example, fist fucking, finger fucking). A vanilla option that nonetheless occurs in SM play (and not necessarily with the bottom as the receptive partner). Hygiene precautions should be observed with this activity -- see safer sex. See also ass play, cunt torture, insertive toy.
I love this definition. As it uses all the words that should be used when using that term. I also think its interesting that this needed to be in the BDSM dictionary...Lol
Thoughts?