‘Awkward Uncle’ Simeon?

Why would he go and say something like that? Chances are good that over the holidays, as you got together with family, someone may have said something awkward. You know the kind – the crazy uncle who would said something like, “Cute kid you have there!  Too bad he’s got his mom’s big ears." So, on this happy occasion at the temple, why would Simeon tell Mary that "a sword will pierce your own soul too"?