Nonusexual
An otherwise straight dude who experiences strong sexual urges at the sight of New Zealand rugby player Ma'a Nonu.

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.
Calvin: Dude, whoa, hot chick alert. And she's playing some sort of wierd netball in a tight black shirt.
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