I have a good friend who has the same birthday as another friend. They are both huge baseball fans but one is a Giants fan and one Dodgers. For non baseball fans, those teams are usually intra-league rivals. So each year for their birthdays they get each other a piece of the other team’s memorabilia. And each year they quietly swap it with each other into their own collections a few weeks later, because the Dodgers fan doesn’t really want Giants merch and vice versa. So like at whomever’s funeral I can maybe expect a boo toward the Dodgers or Giants from this long friendship. It would feel right.