5:38 PM PT — Offset just responded to CB's challenge … saying "coke head don't want" smoke.
Chris Brown is going after Offset as their beef over 21 Savage continues to escalate … with CB challenging Offset to a fight, and telling him to suck his d***.
Chris went NUCLEAR after the Migos rapper called him "lame" for posting a meme poking fun at 21 Savage for being from the United Kingdom.
Breezy launched an explicit series of insults at Offset, saying … "F*** YOU LIL BOY … SENSITIVE ASS N**** … IF YOU A REAL MAN FIGHT ME. Oh and another thing, SUCK MY D***!!!!"
CB came back for seconds, because he hurled more insults … adding this on top of his prior barbs, "If he don't get his EARTH WIND AND FIRE pootytang space suits WEARING CAP ASS LIL BOY da f*** out my comments and off my d***."
As you know, Offset and 21 have been close for years … and it seems Offset isn't taking crap from anyone making fun of his boy for getting detained by ICE, a saga that's revealed 21 is actually from the UK and not from Atlanta.
As for the meme Breezy posted that led Offset to call him out … it's a 21 Savage music video with a British-sounding rapper doing a voice-over.