As much as I don't really like feet, I hate socks more. Wearing socks in bed is awful, and I don't know how anyone can do it!

Personality things... When people get really cocky and they seriously think that they are going to "rock your world" and be the best fuck you've ever had, by far. That kind of attitude, regardless of how much I've been having fun up until that point, makes me want to respond with "I've had more fun alone with my hairbrush" or something as similarly ego-crushing.