In part this phenomenon can be explained by the fact that Nonu, whilst a feared competitor in a physical game, has girly hair, a tendency to wear eye make-up and, despite being an international athlete, a sizeable rack.
Marshall: Its rugby you Nonusexual
Franklin: Man I got with this chick last week and took her back to my place. But it just wasn't happening. Then the rugby came on and I saw Ma'a. Stiff as a board straightaway and got the job done.
Keith: Hmm, sounds like Nonusexuality to me