v. or n.-depending on usage.
When having intercourse, as the action heightens, the splack is the sound that the two bodies make as they come together with excessive force. Not to be confused with "smacking that ass," splacking is a sound of body parts "smacking" together.
Also, they act of really "hitting it hard" or "putting it on her" as they often say, which amounts to having some really furious sex.
A term used for fake gangsta wannabes who think they can dance. The term splack my only be used if: they are dancing like spasdics; put on fake gangsta accents and come from england (mainly london); and use words such as 'blood', 'bro' and 'respect'.
Exclamation, usually said in a falsetto voice. Comes from the sound one hears after intercepting a pass in Madden, and other related football games. Is now used as an all purpose sound effect.
So he finally gets out of his chair, winds up, and SPLACK, hits him in the back of the freakin head with a freakin 3-hole-punch.