Not the pay off some may want, but my mystery is solved.
Our son was partnered with his aunt in a card game tournament at thanksgiving that involves partners passing cards. He was miffed that she did not pass him the 7 in her hand that he obviously needed for them to win, and they lost. They are both ultra competitive, and there was some pot stirring ribbing still at the Christmas gathering. So, she mailed him a 7 and just now sent me wife a text asking if he got it. Picturing a 45 year old applying a bunch of unicorn and rainbow stickers on the envelope is still a tad creepy.