Jones said the drug bender was part of something he called "a month for the ages" -- explaining how he did a "weekend of cocaine" and then beat Cormier the following weekend.

FYI, Jones had previously admitted the cocaine use after the positive drug test was revealed back in '15 -- but played it down as a one-time slipup saying, "I'm not a cocaine addict by any means or not even a frequent user."

Cormier called Jones a junkie and accused him of also "sandblasting prostitutes" the same weekend. Jones denied sandblasting any prostitutes.

They will fight in July.