Beverly Hills, 90210
Charlie (Jason Priestley) says to Val (Jennie Garth) "Didn't we go to high school together?" The joke was that Jason Priestley and Jennie Garth were both stars on FOX's hit drama "Beverly Hills 90210," in which Priestley's character and Garth's character both were in the same high school. He also said "Weren't you best friends with my sister?" and he also mentioned he was editor of the yearbook (all of which are references to the show).