His quote "Piss off, old man" is well know in Poland and Polish politics. This is important quote.
Sincerely from Poland (I don't like Kaczyński :)
F*** source: Gazeta Wyborcza, "Wybory", 5 listopada 2002 (p. 7 of Gazeta Stołeczna). i can't agree, this was not the f word! the word spieprzaj is not so strong! and furthermore the man (who was drunk - 'Rzeczpospolita') was not called a pauper or sth like this, he was called "dziad"
Surely the best translation of this is F-off, grandad... that preserves the literal meaning, and I'd say gets the strength about right.