So, I'm a pretty literate person in general. And I've been in science for a long time. But I seem to be incapable of properly pronouncing the word centrifuge. I pronounce it Sen-Ter-Fyooj instead of Sen-Truh-Fyooj. It's the equialent of my radiation safety officer pronouncing nuclear as Noo-Kyuh-Ler instead of Noo-Clee-Er (which he did... repeatedly).
What are your embarassing professional foibles?