A term used by whiny alt-righters to insult anybody who even remotely dissents from hyperconservative orthodoxy.
The term is typically used by frustrated involuntarily celibate white males who portray themselves as victims of those who reduce their arguments by calling them Nazis and racists; these males tend to have no self-awareness of the irony that they themselves are doing the exact same thing by calling their opposition soy boys.
Regular person with nuanced, balanced opinions: Hey, maybe racism can exist in subtle ways that we are consciously unaware of.
Alt-righter: Hey! Stop saying things I don't like! Soy boy!
By Donald Scum