I know exactly what Barack Obama is suffering from. It is just plain ole' nerves. The kind of nervous pressure that finds a relief spout with laughing (just a little too much). It's often seen in public, and at serious occasions. An example would be when my sisters and I would be in Church waiting for Mass to begin. It wouldn't take too much provocation to get either of us giggling...to the point we might have to excuse ourselves. I remember a case where one of my friends went to the doctor for a gynecological exam. She was a normal young lady. Yet when the doctor began to examine her, she started laughing uncontrollably. Was she mortified? Yes, but that didn't stop her from laughing like a hyena.