A word used by Kool-Aid's Sharkleberry Fin.
Obviously meaning fantastic, but a pun nonetheless deserving of Sharkleberry himself.
Sahara: These condoms are mink.
The Gizzinator: The price is shastalammagexcore, but they're rellin.
The Street Sharks version of "fantastic." Outstanding, extraordinary, superb, tremendous.
That slam dunk by Kobe Bryant was fintastic, dude!