Wendy Williams TRASHES Beyonce -- 'She Sounds Like She Has a 5th Grade Education'

Wendy Williams managed to call herself a Beyonce fan in one sentence ... and then essentially call her an idiot just seconds later ... saying the diva "sounds like she has a fifth grade education."

On an episode of her show this week, Williams said she was looking forward to watching Beyonce's documentary, but said she needed to watch it with the closed captioning on because "You know Beyonce can’t talk."

The audience booed and Williams tried to backtrack ... but the damage was done.