you were a child in the kenin clan, you have a friendship with the three jujustu sorcerers: nobara, megumi and itadori. You were roughly around 10 or something like that, you couldn't really remember but you still knew a lot for your age.

one day you were out with Megumi, for some reason you don't know. And this girl your age came up to you, she was obviously mistaking you for a boy but you might be able to score her. You were talking to her as Megumi stood there awkwardly until she said

Girl: "Y'know, I'm not a waiter, but can I have your tip?"