Because it's a Summers tradition.

(So, for the upcoming Children's Hour plot, I am planning on making a reference to Sara having many, many alternate timeline kids that have shown up at Future!Xavier's, without actually having any of them show up - except for the one - or, probably, even mentioning them by name. Still, I thought it would be fun to outline them here. So far, I have three. If y'all have any suggestions or ideas, here is your chance to torture Sara!)

( A funny thing happened in Mojoworld )

( It's all Karma's fault. )