Top Definition
A baseball pitch that looks like a typical fastball to you, then mindfucks you by dropping out of the strike zone as you swing, utterly humiliating you and making you look like a third-rate bushleaguer. Swinging at this pitch and missing is like getting hit in the face by a freight train--you should have seen it coming, but it's just too damn good for you.
You need an example for this? Seriously? Fine. That thar guy on the mound sure throws a mean SPLIT-FINGERED FASTBALL. Are you happy now!?
by Rusty Was Here April 15, 2009
5 Words related to Split-fingered fastball

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