In the "Titty City" chapter, there are two ATM machines; one near the bar and one near the slot machines in the game room. Go up to one and use it. It will say "card read error". Press action again and it will say "Feed me a stray cat" --a reference to the scene in American Psycho where Patrick Bateman tries using an ATM machine and it appears to him to say "Feed me a stray cat".
