Widely used in Miami, it just means to have sex, or fuck.
Man, i brought that chick back to my crib and it was a splack fest.
First known mention: The 2Live Crew song "Put Her in the Buck" in the following context:
"Lay the bitch on the bed, flat on her back
Hold her legs up high, make the pussy splak"
From this usage, it can be inferred that the word "splack," means:
1. (n) The noise that the penis makes when repeatedly "pounding" the vagina makes when especially lubricated. An onomatopoeia.
2. (v) The sound used as a verb, similar to "clap."
1. "Her pussy went splack, splack, splack."
1. "It only took me two minutes to make that bitch's pussy splack."
To engage in sexual intercourse with a female or multiple females that one hasn't had a previous relationship of any kind.
Lets splack these ladies.
The breaking of a steering column on a G.M. car in order to steal the vehicle.
How did you get that Cadillac? I used a slim jim to get in then i splacked the column.
A person who is Spanish and black
Marquis from Everett is splack because he has no dad
Someone who is of combined heritage: hispanic and black. It's a portmanteau of the words "Spanish" and "Black" to form "Splack". Ironically, half the time they seem like neither. They may or may not use stereotypes of both cultures and combine them to form an Ultimate Minority. The term is meant in a humorous and non-racist way.
"Yeah, I'm half Spanish, half Haitian. Splack. It's easier to remember."
"By being Splack, I am a serious threat to the chicken population."
To fight someone
Yo I'ma splack that nigga