cuck is short for cuckold. Its a genre of porn where (usually) its a nerdy white guy who gets off watching his wife get railed by BBC (Big Black Cock). Sometimes the wife commands the cuck to clean the BBC. :MARIS61:
And most of these nerdy white guys are fat and bald? and they have wives, black dudes with big dicks wanna pound? Yeah. Something ain't right here, lol. Ignorance is indeed bliss, lol.