"fiskus" is an easier version of the word "Fi5KuS"
(In a PC game)
Man 1: What the hell was that, I was killed by a non-skillfull spray weapon.
Man2: Haha, it must be the Fi5KuSblaster :D
Man 1: What is the name of the weapon that can shoot rockets?
Man 2: You mean the fiskus launcher?