John Edwards lashes out on baby-mama?

John Edwards has been losing his temper!

The shamed former politician apparently blasted baby mama Rielle Hunter over the steamy sex video they made during his White House run.

Edwards exploded after a judge ruled he could not only be questioned under oath about the explicit tape, but portions of his testimony would be made public, according to American tabloid the National Enquirer.

“John was shocked with the judge’s deci­sion, and he took his anger and frustrations out on Rielle,” an insider divulged.

“He screamed at Rielle, calling her an idiot for not destroying the tape, and yelling that she made a fool of him for talking him into mak­ing it.

“Rielle was in tears, and tried to apologize, but John didn’t care.

“His worst nightmare is that the tape will get on the Internet, and destroy what little reputation he has left.”