Of Draco, Ginny, and Excessive Euphemisms

Either Dumbledore's assignment of Draco and Ginny as Potions study partners was perfectly innocent, or it's all part of Voldemort's cunning plan to spread nastiness, evil, and complete and utter un-niceness over all of Hogwarts by getting his sinister junior Death Eater heir-to-darkness a shagging partner to perk up the apocalypse to come. Ron is convinced it's the latter.