Nicki Minaj SUES YouTuber "Nosey Heaux"! "Your Son's COCKEYED!"

Another YouTuber in hot water! @Nicki Minaj is coming after @NOSEY HEAUX LIVE GOSSIP & NEWSROOM. You remember what happened with @Cardi B and @UNWINEWITHTASHAK this January. Now the courtroom is heating up again! Context: @Nicki Minaj just tweeted about the lawsuit, making it clear she isn't playing around ... and will take over the blogs talking smack. Nicki Minaj is making one thing VERY clear, she and her legal team won't put up with social media accounts making wild statements about her ... and now she's filed a lawsuit. According to legal docs, obtained by TMZ, Nicki claims a woman named Marley Green -- who goes by the social media persona "Nosey Heaux" -- posted a video Monday talking about Nicki in which she allegedly said Nicki is, "shoving all this cocaine, shoving in all this cocaine up her nose. Allegedly. Thank you. Allegedly. But we all know it's true. "F***-listen, I can't even say allegedly with that 'cause I, we all know it's true. I'm not saying allegedly on that. Nicki Minaj is a cokehead." Not only that, but Nicki claims Green has also made "vile" comments about her 1-year-old son ... calling Nicki's entire bloodline disgusting and saying Nicki needs to get her son in therapy because, "Your baby is going to be a rapist, too." While the legal docs call Green a "nobody" and someone "whose main accomplishments in life have been a string of criminal charges, bail jumping and bad debts," they acknowledge her social media posts have still gained some traction ... and the possibility people could believe what she says.