20, Part 3 (Interlude) Lyrics

Janet So wait How old were we when we first met? How many years ago was that Lynette?
Lynette '78 [ From: http://www.metrolyrics.com/20-part-3-interlude-lyrics-janet-jackson.html ]
Janet '78, that's like Good Times days
Lynette It was when you were doing...umm...Penny That's when you were cute remember