Oh Really?

Yesterday, DB calls me over to ask questions during lab.  As I'm leaning over him at the lab bench to look at his data, he is asking me his question over his shoulder.  As he is talking to me, he swirls his head in a weird way.  In retrospect he was trying to flip his hair at me.  I said "What are you doing?  Why are you moving your head like that?"

He says, "Well, I want to show off my hair to you since you don't have any."

"Well, looks like your grade in this class just took a hit!"

I don't see much of difference, do you?