The ability to ask "stupid" questions without feeling embarrassed is a superpower IMO.
I had the sweetest manager once. Someone stared talking about iphone and she [1] casually asked "what is iphone?" (this is after 6-7 months after iPhone was launched). Everyone's jaw dropped ... what? In which world u live in? ... to which she said with a wide smile and not an ounce of embarrassment .. "what? I don't know what iphone is?"
But she was otherwise so good in every other aspect ...
[1] She is/was mother of 4 kids and that left her very little time for anything else.