In Barcelona, a few years back, staying at a hostel with my two best friends.
It’s a pretty typical hostel, in an old college-dorm style, with rooms with double bunk beds and bathrooms shared between two rooms.
We came in pretty early that night, tired off our asses from walking all over, and a leeeetle overcome by the many rounds of Sangria that passed for our hydration.
By around 9 pm, I was in bed, about half-conscious, one of my friends had headed out to find us something to eat in the room, and the other one was in the tiny little bathroom, taking a shower.
This strung-out looking young man comes in, looks around and does some obvious mental calculations about the occupants, throws his stuff down on the one empty bunk, looks over at me and nods. Then he turns to head into the bathroom, and opens it to see my other friend wrapped in a very short towel.
His reaction? “Dude… You’re a GIRL!”
Priceless. He got even more confused when my other friend came back. I’m pretty convinced he thought he had ended up in a porn flick - “Heck yea, sharing a room with three chicks! Hot damn!” Poor dude was sadly disappointed.