Harry would never make fun of his friend like that though. He reserves his sass for those who deserve it. Ron feels insecure enough about the robes in the book. That said this scene is hilarious in the movie. But it wouldn't work in the book << Very true.
Book VII from Fred and George sucks. I sorta expected Dumbledore to Obi-Wan on us (that's the way Heroic quests flow), but Sirius and Dobby, I thought it couldn't get worse. Fred was the worst. - Harry Potter / Fred 'n George Weasley.