Jim Jones has words for Pusha T after the dude dissed him on Pharrell's high-fashion runway last week -- and it sounds like things are getting personal ... and possibly even ugly. A new clip of what …

Jim Jones has words for Pusha T after the dude dissed him on Pharrell's high-fashion runway last week -- and it sounds like things are getting personal ... and possibly even ugly.
A new clip of what appears to be JJ's response to PT leaked online this week ... it's a brief snippet of Jim dropping bars, and perhaps even shooting a video. Like we said, it's just a small sample of the overall track -- but on its face, he's getting in the mud to fire back.

WHAT HAPPENED TO THAT BOYTwitter/@essowrld

Check it out yourself ... Jim references/makes fun of Push's collaboration with McDonald's while going on to slam his last album, "It's Almost Dry," by essentially calling it trash.

He then mentions Clipse -- Pusha's rap group with his brother, No Malice -- and has this to say ... "Trying to bring the Clipse back // Talking ‘bout your brother, what happened to that boy? // It looking like they be selling crack to that boy."

Yeah, on its face ... Jim is accusing Malice of once being a drug user. Him and Push have made a name for themselves by rapping about selling drugs -- but Jim's suggesting at least one of them did more than that. Considering Malice has, by and large, left rap behind ... ya gotta imagine his brother is gonna take this one to heart, and most likely respond with more venom.

Now, as for how all this started ... it dates back to April, when Jim hopped on a podcast and said Pusha T shouldn't be considered a Top 50 rapper of all time -- pooh-poohing his music.

During Pharrell's debut LV men's line in Paris this past week ... Push and Malice dropped a new Clipse track, and many considered his bars aimed at Jim directly -- presumably in response to what Jim had said in the spring.

Well, it sure seems like Jim wants all the smoke -- and we know Push isn't one to back down from a rap beef. He's taken it there before ... and that was against Drake, no less.