I don’t mean to mince words. Willful ignorance = stupidity. That’s exactly what Sherri has in spades.
I offer two recent videos up for proof on this.

#1. Sherri thinks the Earth is Flat. - During a discussion of evolution, Whoopie tried to make a point about how scientists have proven things that some christians in history have challenged. This led the discussion to the world being round. Sherri apparently thought the Earth was flat.

#2. Sherri thinks Nothing came before Christians. Apparently Sherri has narcolepsy and slept through every history class she ever had. How can someone on a Nationally televised show not know what “B.C” means when it applies to the timeline of history? Maybe they have her on the show for laughs? (read: to make fun of her).
I can see her being the butt of all the office jokes. Chicken of the sea anyone?