These are words I know how to pronounce when I say them aloud, but I say (think?) them absolutely wrong in my head:
Sufjan (as in Stevens)
Jens (as in Lekman)
I know there are more that I'm forgetting. And probably another list could be made of words that I pronounce incorrectly both inside & outside of my head, like "paprika" for just one example.
*I heard someone say this word on NPR the other day and thought "Oh, of course that's how it's pronounced." But I've already forgotten the dulcet NPR-pronunciation. So I'm back to the inner-head pronunciation of in-chote, which can't possibly be correct.