Leonardo Da Vinci’s The Apprentice would be a great show for a gay porn channel.
There’s also a theory that comes up from time to time that it’s a self-portraitof Leo in drag. (My theory is that if there’s a resemblance it could be less narcissistic than that- Leo’s father had many children by his wife and by other women so there were probably a lot of women around who would have looked like him.)
Anyway, Wiki sez that a contemporary note documenting the identity of the Mona Lisa model with Lisa, the wife of del Giocondo, dates from 1503, around the time when the painting was begun.
While I’m not disputing that Renaissance painters sometimes had their male assistants stand in for models of female figures or that some of them had homosexual affairs, I think we’d need way better evidence than this to conclude that Leonardo’s model for La Gioconda was not in fact the historically documented wife of del Giocondo.