Conrad Murray 'My Damn Attorney Is Not Prepared!'

11/12/2011 5:45 AM PST

Conrad Murray -- 'My Damn Attorney is Not Prepared!'

Dr. Conrad Murray
might have seen his eventual conviction for manslaughter coming -- because he ripped his co-counsel Michael Flanagan for screwing up a key cross-examination ... and was so angry he told his own mother to shut up!

It all went down during the trial while Murray was discussing the moment prosecution expert Dr. Alan Steinberg corrected Flanagan -- in open court (below) -- about whether Conrad put Michael Jackson on "a drip."

Murray goes off ... "I take offense when my damn attorney is not prepared for that man." The rant was taped for the documentary "Michael Jackson and the Doctor: A Fatal Friendship" which aired last night on MSNBC.

Murray added, "Flanagan gotta wake up. He needs a lot of coffee and some pit bull, or Red Bull after lunch" -- and that was just his warmup. Check out the rest of the clip ... because Conrad's anger builds and builds until he tells "Mommy" to zip it.