My dad has an excel spreadsheet of every penny he’s ever spent on me
He’s not tracking this for any other purpose than to hold it over my head and say that he’s such a great father for spending so much money on me. As a “joke” he’ll say I’m in debt to him and that he’s waiting for me to repay him.
One time I was in college and forgot my ID at my parents house so I asked them to mail it to me. He added $0.50 - stamp to the spreadsheet. This is all he has to cling onto now that I’m an adult and no longer financially dependent on him!