When playing a Horde character at level 40 or above with 225/225 in your First Aid skill, travel to Hammerfall. Go to the Trauma Surgeon in the building to the left of the entrance. He will give you a quest in which you can gain Artisan First Aid. In this quest, you must run around and bandage dying patients. When dying, one of the patients says "Goodbye cruel world.. I'm leaving you today. Goodbye. Goodbye. Goodbye". This is a reference to Pink Floyd's song "Goodbye Cruel World" off "The Wall". These are the exact lyrics in the song.