Lisa decided to make herself younger. Knowing full well there was no going back. Whenever she stopped that was it. She'd have to wait to be that specific age again. She clicked the "self" button and on the watch it displayed "16 year, 5 months and 11 days" which was exactly her age as her birthday was 5 months ago. But soon when she looked at it again it read "16 years, 5 months and 7 days".
According to the watch she was 4 days younger. It was slow but to test it, Lisa didnt mind. She didnt want to speed things up and accidentlly get stuck back in diapers for 1-2 years or worst. She looked at her mirror and of course there wasnt any changes as according to watch she was now "16 years, 4 months and 20 days"
Lisa then wondered if anyone would remember her true age. Did she have the same birthday or was it now 1 month later. Lisa quickly stopped it when it was at "16 years, 4 months and 1 day" to check her id. Normally it would say 5/26/2004. When she looked it said: