Also a book (later transpired into a film trilogy) about a theme park with Dinosaurs.
Just be thankful you spelt it right.
Guy 2: Isn't it Jurrassic Park?
Guy 1: I don't wanna know you anymore
It is best described as an expression of joy at a favourable outcome. You could also use "cash back!", "in off the red!", "Mary Poppins!", or of course, "Kiss my face!"
Alan Partridge: "Jurassic Park!"
Henry Wu "i'll put the kettle on"