The 76-year-old comedian filmed a video for Cosby and bluntly says, "Oh Bill ... You fucked up," adding "The White man says yes, yes you guilty!"
Cosby is currently under house arrest and was given his ankle bracelet on Monday after being found guilty of aggravated sexual assault. He's facing up to 30 years in prison, 10 years for each of the three counts he was found guilty on.
Witherspoon has some parting words for the disgraced TV star ... "Bye!"