"As serpent, by the pointed spear pinned down, Fixes his teeth in it, with fruitless spire;
Or as the mastiff runs towards a stone, Which has been flung by some wayfaring wight, And gnaws it in his rage, nor will be gone Until he venge himself; 'tis so the knight, Than any mastiff, any serpent, worse Offends Drusilla's cold and lifeless corse.