Ok, I'm gonna stick my nose in here...probably get it bitten off but what the hell.
MYTH: you can make generalized statements about human behavior and sexuality.
FACT: Nope, won't work. There are as many preferances as there are possibilities and if its possible then someone somewhere is doing it. So if you are trying to classify gay, straight, or Bi; well you're gonna piss somebody off...so take heart yaoi fangirls, some where out there your fantasy is coming true
Just my two cents...