Actually: what's gay is one man fukking or sucking another. All the other shyt is people trying to guess who is gay by how they act in public. This is more of a "what's acceptable public affection" type observation.
Do you all know about the Etoro people of Papua New Guinea?
http://en.wikipedia.org/wiki/Etoro_people
The Etoro believe that they each contain a certain amount of life force, the highest concentrations of which are contained in semen. This life force passes to others through sexual relations. Women are seen to waste the life force if they do not get pregnant after sexual intercourse. As people get older, and their bodies weaken, this is attributed to a depletion of their life force.
There is also a lot of male-male sex in order to "make the boys strong"