In the video game The Witcher 2, you will often hear enemy soldiers shout that sentence. Lilies are the emblem of the kingdom of Temeria. In essence "Plough the lilies" means "Fuck the Temerians"
Barpatron: Look, Temerian soldiers!
Other patron: Plough the lilies!
Used by enemies in the game The Witcher 2, can be speculatively translated as, "Fuck the women," as the word "plough" is used as a synonym of the word "fuck." Example: "Go plough yourself!"
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. Penguin Books,1992. p. 38)