You can tell who Gay by the Jeans is. The Gays wear supper tight Yoga - Pant type Jeans - showing the ass crack. Regular guys only wear semi - tight yoga - type Jeans to show off their 'Junk'.
Science thinks it may be in the Genes. It is impossible to make a Straight guy Gay. No case of that has ever happened - as Straight Men are 100% programmed for a certain voluptuous hole - and for Breasts - and nothing else will Satisfy.
Then there are the other Bi or Tri Men who are just Horny - and a Gay behind looks good - or in a pinch a sheep will do.
Any Hole in a Storm (of Horniness).
The Way things Are - Blame Mother Nature.