This is a PM I sent to a random reddit friend, and it was too long to not share. This happened about two weeks ago now. Hope you enjoy!
I was hanging out with a new-ish friend of mine (girl) who's a little older and has her own apartment, so it's nice to have a getaway. None of my high school friends have their own place obviously. Her building is right by a university and pretty much full of students so in the summers it gets pretty loud and fun on most nights. Anyway,I was there on a really hot and humid day so I jumped in the shower for 5 mins mostly to cool off. When I was out and drying off, I heard some voices talking in the apartment. My friend said something and walked to her room and closed the door. A few seconds later, the bathroom door opened and a guy said, "Hey, [my friend], where are– what the fuck?!", totally not expecting to see me standing there in literally just a bra. We made eye contact, froze for a second or two, until I gave him a look like, "Uhh, hello. I'm obviously not who you're looking for" and he closed the door and found my friend and asked who the naked girl in the bathroom was.