Well, in the strict sense, a SJW is just the internet version of the kind of “nice guys” who believe that if they hold open a door for a woman, she is obliged to offer him to become his sexual slave for life.

SJW, most commonly, are straight, white, middle-class men who seriously believe that if they spend enough time on the internet decrying the evils of the cis-gender, white-supremacist, chauvinistic 1-percenter patriarchy, the Swedish Bikini Team will magically appear behind them and offer them untold sexual pleasures for eternity.