Just found it.
Grzegorz Brzęczyszczykiewicz
Гжегож Бже(н)чыщыкевич.
I heard it is some Polish mix of folklore created with single purpose to fry brains of nazi invaders into overboiled spagetti.
Who know more about that?
Now talking some unspeakable last or first name can be a form of protest to bring a bit of revenge towards the state agencies employees and other members of repressive apparatus.