He was a student of human nature.  Well, if that’s what you call a guy who has a collection of pictures of people with various deformities performing unspeakable sex acts on his cell phone, which he randomly whips out as conversation starters throughout the evening, presumably just to see the reaction on people’s faces, and then when they call him on this he quickly blames it on “his buddy” who constantly sends him these pictures, and apparently compels him to show them to others, which makes you wonder what sick twisted pleasure “his buddy” gets out of the whole thing, unless he’s that one elusive person on the Internet who is taking these pictures in the first place.