Quote:
Originally Posted by Jane
Yo que sé! is an expression I hear always, I suppose it means; what do i know? but I´m not sure.
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It implies a certain level of familiarity, so I wouldn't use it in a formal context, Jane.
In my mind it belongs to the sort of expressions my teenage daughter uses all day long:
- whatever!
- as if I cared
- Duh!
When you say
¡Yo que sé! you are implying you want to be left alone.