[This memory is all from a point of view seemingly originating from the full-length mirror in Sulu's cabin's bathroom, and it's pretty obvious why the community chose this particular memory.
Sulu is a woman, first of all.
Second of all, he's standing in his boxers and a black undershirt, both of which are too baggy on on him now that he's got a narrower frame, hands grabbing fistfuls of his hair as he glares at himself. Finally, he lets out a frustrated groan and pinches the bridge of his nose, leaving the bathroom. There are a few minutes of mumbled swears and it sounds like he might have accidentally stumbled into a wall at one point, and then he returns to the mirror dressed in a yellow version of the regulation
woman's uniform, boots and all. He stares in utter disbelief for a moment before trying in vain to pull the skirt down lower.]
This is ridiculous. [He rubs his face and then tries to comb through his hair with his fingers, unsuccessfully - there is a lot of hair there, compared to normal - so he grabs a comb from a drawer and tries his luck with that.] So stupid. [He leaves the mirror for a few minutes, then returns, digging through the drawers with one hand while trying to get the comb through his hair.] I don't have - ugh!
[The video goes blank suddenly, and then comes back with Sulu dressed in uniform, without the boots, turning this way and that to get a good look at him. He doesn't seem as utterly stressed as he had before, and it looks as though he's actually been like this for a while, since he's not as unbalanced as before and his hair is in a neat ponytail.] Huh.
[He smooths out the skirt and yanks the elastic band out of his hair, wincing as it catches, and then parts it down the middle and holds both bunches with his fingers, giving himself pigtails.] Jeeze, this is way too much. [He tries twisting it all into a bun and fails miserably, leans in close to check the barely visible bags under his eyes, steps back and smooths his uniform out from chest to hip, turning in a circle.
It goes blank again, and comes back in low-lighting, Sulu stumbling around in the bedroom before wandering into the bathroom in his usual uniform's shirt, still a woman and rubbing his eyes blearily with both hands. His hair is a tousled mess and he pauses to stare at himself in the mirror. His voice is groggy and faint.] Oh, right, still a chick. [He leaves the frame and there's the sound of a shower starting; the video cuts to Sulu walking past the mirror in a towel - he pauses at the edge of the frame and back tracks, raising an eyebrow at himself before smirking.] Damn, I do make a pretty fine woman.
[He walks off frame again looking self-satisfied and it goes mercifully blank before more of Sulu being a derp is revealed.]