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The act of going completely verbally insane on someone; cruelly bashing an ex using any tidbit of personal information you can think of.
"jimmy called me a crazy psycho hobo skank because I slept with three guys and used to have a poor credit rating, but that was before I even dated him!"

"wow, dude went all raychaba on you."
by penguins6 August 20, 2011
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