HOSTEL
My only experience in a hostel was in San Francisco. One: it wasn't really a tourist hostel, but a short-term housing situation--which turned long-term for some people. Two: we were lucky the pizza place was downstairs, so the interior temperature could reach 59* F. No skimpy sheets for us.
And it seemed I was the only guy in any of these 6-bunk rooms who took his shoes off to sleep! It was totally some kind of half-way house; seemed like one step up from the street for these drunks. I was the only one who had any evidence of income, and the only one who left during daylight.
Then one week, there appeared another queer in the opposite bunk. He was kind of sloppy-average build and about 27. One morning, searching furtively for sight-lines from the other bunks, he started wanking under the covers. I knew just what to do: I started playing with myself under the covers too. And when I was certain everyone else was still out-cold, I threw my covers down and showed him my rod. His eyes popped out off his head and he slithered over to my bunk.
And he got to touch the fantastic prick. And I jerked. And he jerked. And I came. And he snuck back to his bunk. And we both slept some more.
But here's the stupid part: The next morning I woke to find his hand under my covers. For those who don't know, even if you're a big perv and an exhibitionist, it's not cool to fuck with somebody in their sleep--unless you've been having sex and sleeping in the same bed. Made me pay closer attention to where I put my wallet.
OTHER GUY'S MORNING WOOD
But yeah, the only time I ever saw another guy's morning wood was back in southern Cal, when another house guest and I slept on opposite couches. It was warm weather and he was about 18 and I was 3 years older. By morning, he slid half-off the couch, from under the covers, still in his sleep, and still in his briefs. The girls came out from the bedroom and giggled. But they never talked about it later. Coincidentally, in alignment with this thread, he was European.
SPORTING IT DESPITE OBJECTION
In my most recent fucked-up housing situation, I tried a little exhib. I was really pissed-off that my housemate would go on drinking binges; because he also engineered it so that his bedroom door was torn-off and everyone had to watch as he sat limply upright, awake all night, ripping open beers and staring into space with red eyes and red face.
The drinking also gave him 'flexible' opinions on everything from his sexual orientation to his body modesty. Sometimes he'd get shy changing with me in the room, and sometimes he'd change in the living room. The night I first met him (back at that same Hostel) he was sneaking in a male trick as they both staggered around the dorm room kissing. But he never talked about liking dudes when he was sober.
So in my rage, I thought of something really fucked-up and exploitative. No, I didn't tea-bag him. I decided to work out one of my perversions: I would intentionally walk to the bathroom in the morning--past his door--naked as a J-bird--and with a raging boner.
I did it several mornings. And I didn't always wake up that way either; I had to work at it. But I don't know if he ever saw, or if he decided to pretend it was a hallucination. I guess I haven't worked it out yet and I'll have to try it more in the future.