UFC superstar Daniel Cormier says he wants to fight Brock Lesnar in the Octagon ASAP -- telling Dana White, "What are you waiting for?! Get this sh*t on the books!!!"
Of course, Brock got destroyed by Seth Rollins at WrestleMania Sunday -- a storyline many people think was written with the intention of freeing Lesnar up to go fight in the UFC again.
Which brings us to Cormier ... who had previously talked about retiring on his 40th birthday (which happened a couple of weeks ago) -- but now that Brock's in the picture, DC says he wants all the smoke.