the one scene I keep remembering and laughing about is when Suzie spots the David Bowie-looking sex police lady in the diner and asks "is she... doing kegels" and later they go over to the counter and written in jam is "yes, I was doing kegels" (I'm paraphrasing). the humor here is just juvenile enough for me without feeling really crude, and I like suzie and jon.
(edit: I wish suzie's friend had more of a personality than being "the slut")