1)The fucking ultimate in goodness
2)Kinda like shiznit, but cooler 3)For all the rest of you retards, it means shit
hip hop gangsta:yo,dat bitch is da shiznass
blacker cracker:(slaps hip hop gangsta upside head)shut da fuck up white boy fo' I kick the shiznass outta you
dude:i'll kick the shiznass outta both you guys if you don't SHUT THE FUCK UP!
Similar in the use of 'For Narnia' , but with a much smaller scale of purpose. Usually yelled aloud after some one else states what is going to be done, and followed after with a stomping charge of glory. Cape, shield, sword and unicorn is optional.
Fo shiznaps is another way to say "fo sho" or "fo shizzle". REALLY cool kids use this term. Or fuckers who don't want to use "fo shizzle" or "fo sho", which I don't advise using.
Fucker 1: So we gonna get laid tonight?
Fucker 2: Fo shiznaps, foo!