Is It Fair for Fans to Claim World Series Titles One Before They Are Born?

Fans like to brag about their teams world series titles, especially when trash talking fans of different teams. Is it fair for fans to claim titles one before they were born? If you're a 21 year old yankees fan, is it fair to gloat about 27 titles or can you really only count the two thousand nine win i know fan arguments can be kind of dome, but i've always had this question. I'm a brewer's fan, so all of this is irrelevant to me.