Weird dream

Last night I dreamed I was on a group tour in Poland. I stopped in a store to buy a book about North American aboriginal people (I don't know why I would buy a book like that in Poland of all places), but the bookstore lady (who looked very much like the lady who runs Artus Books on Ronce)refused to sell it to me unless I could tell her the Polish word for aboriginal. I didn't know, so I said "autochtone" (the French word) because I thought it might be similar to the Polish (I don't know if it is IRL). But that turned out to be incorrect, so she wouldn't sell me the book.