The three stages of Stanley H. Tweedle
When you are not scared, you are hungry.
When you are not hungry, you can hardly think about sex.
When you are not thinking about sex, you are scared.
Later, she added that Stage 4 is stupid idiot.
There are so many reasons to watch Lexx, Xenia Seeberg is frickin hilarious in the show. It's not just the quote that is funny, you must see the episode to see how she said it.
Probably the best intro to the series is the list of episodes at http://www.answers.com/topic/list-of-lexx-episodes