Of course size matters (duh!) but so does chemistry. And the models in Size Does Matter 2 have none. In three monotonous scenes, racially mixed couples go through the motions on the same ugly set. Poor lighting, static camerawork, and erectile dysfunction only add to the boredom. When someone's cell phone starts ringing, viewers almost expect the disinterested parties to stop and answer it. In fact, viewers will wish they would. One baseball-cap-clad homie reacts to a blowjob by blankly staring into space and chomping on his gum. Very appropriate.