A girl that is so loose that she can't even feel a 9-inch wang in her. She walks around constantly wet willing to give it to anyone willing to have sex. Usually, they are sex addicts and absolutely love the attention they get for acting like such a whore. To be a Four Finger Sally, you have to fit at least 4 fingers in her vagina, but a lot of the time, they can fit a whole fist full and they enjoy it. But sometimes, even that is not good enough for them. Basically, any guy with a penis smaller than 10 inches while erect will not satisfy their needs.
Damn, I just had sex with a four finger Sally. Too bad I didn't feel anything... it was like my dick was in a cave.
by Regina George June 11, 2008
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