Huge Sale! Everything must go!

I've decided to have a garage sale; but instead of selling the material possessions that clutter my house, I am going to sell off the useless knowledge that occupies my brain. I think there is too much clutter up there that it doesn't allow me to think straight.

Who wants some useless trivia facts? Fifty cents for each meaningless morsel that will only help you win a board game. 1 dollar for my knowledge of caffeine. Any takers? I'm willing to barter. But I need to have a clean slate, I'll even sell off the Latin words meaning "clean slate." Come on, anybody?