I read the ratings before I downloaded this game for my nine year old son. While playing the game he asked me the question "does sex really burn 321 calories per hour?" I asked him where he heard this and he said it was from the game; I guess it was some sort of pop up on the game after he lost. I do know it was part of the game as the lady zombie said it. This really worries me as there was nothing in the rating indicating suggestive themes. Can we trust game ratings?