He spends a lot of the song being very indecisive about whether or not to leave his hat 'n glasses on. The dude probably could have a career as a singer on a cruise ship or something if he weren't so busy promoting music tours and kifing Punta Rebels albums.
I miss the non-singing Diamond Dave. The very serious one who measures the quality of a studio by the timeshare they rent out and WILL NOT TAKE AMATUERS!