That's a great line. I loved JD's shaving cream montage at the start of the episode, too.
I also loved one thing which is never the same on a second viewing - the way they try to make you think that Kelso's the good guy and Cox is the bad guy, because it really worked, and it doesn't play like they just did it to mix it up for the sake of it. It really set up such a lot for both of their characters.