tbh I would freak out at first but then be like: hey why don't I prank my friends
what would you do if you randomly woke up as the opposite gender?
Nah bro in fact, I'd need to reorder everything because somehow not that I think of it, I'd have to get new everything if my gender switched
Oh yeah, if you suddenly changed mass/shape suddenly like instantly the air displaced if it's instant you'd intersect with tons of atoms, causing at best a little whoosh that'll wake you up, at worst, lemme think, NUCLEAR FUSION

I'd Crash out XD