You would think that having sex with your grandmother would be even sicker than having sex with your mother: after all, she isn't just your mother, she's your grandmother. But you'd be wrong: your mother is more directly related to you, so having sex with her would be a bit sicker. Except, get this: I was thinking today, if you want to make having sex with your grandmother just as sick as having sex with your mother, the thing to do is take advantage of your grandmother's Alzheimer's to get her in the sack. I think it would be pretty twisted to try to come on to your grandmother with a line like, "It's me, Natie! Look, I'm doing the Charleston!" Would you even be able to live with yourself after doing something like that? Food for thought.