This one is different to me, it sounds like she was giving you a 2 minute warning to clear out any silliness you may have had going on
My mom was the opposite, she and my stepdad would go camping and tell me the day they'd be back, and then come back a day early trying to catch me in silliness, they'd even have my uncle drop by while they were gone to "check".
It never worked, I'm as introverted as it comes, I'm not at home having parties and whatnot, I'm just playing video games and listening to music



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