the act of not being able to stop riding someone's dick, even if there not famous people. these people usually run after the people they follow like a hobbit does a ring. there is almost no cure for these people...actually there is no cure.
josh rode kobe's dick all the way to the loss against the celtics...i think he has dick-rider-syndrum
richard, u need to stop riding jhalens dick!, u need a doctor for that dick-rider-syndrum you have there.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.