My parent’s house, where I grew up, originally had the upstairs simply as one big bedroom. Over the decades, that was piece by piece turned into three bedrooms, a hall closet, and a bathroom, resulting in a number of cramped, strange angles. For example, and relevant to the story, if the hall closet door is open, it almost entirely blocks the bathroom door.
One evening when I was living at home, my parents had gone out and I treated myself to a luxurious bath. Bubbles, I brought my CD player into the bathroom, the works. A nice long, mellow soak. Finally, I got out of the tub, wrapped myself in a nice fluffy towel, opened the bathroom door - and almost shrieked, because someone was right in front of me, in the doorway of the bathroom, gloomed in the dark of the hallway!
It was my reflection in the mirror on the closet door, which tends to swing itself open. The door is immediately perpendicular to the bathroom door, and when it’s open, that’s all you can see from the bathroom.
So, feeling a bit silly, I push the door closed - and there’s someone coming out of my parent’s bedroom! I scream and step backwards, groping for the bathroom door to put something between me and this figure.
My mother gasps and steps back into her bedroom, and for a moment we both stand there gaping and shaking.
Turns out my parents had gotten home while I was in the bath, and I was so immersed in my relaxing I didn’t hear them come in, and I’d shocked the hell out of my unsuspecting mother, who had no idea why I screamed at her. My dad came upstairs, confirmed neither of us were in fact in any danger, and declared us both silly people.
There was also the time that I came to the late-night conclusion that my friend’s dog was a crazed rapist-murderer trying to break into the house, but that was very long ago.