It's a bearded cute guy jerking off in a gym shower.
The partition between booths is just up to the neck so he makes eye contact with the guy in the next booth while jerking off.
Also, the guy in the next booth checks on him knowing he's masturbating.
He finally cums at the end.

I don't remember where I've watched this. Thought it was xvideos or xhamsters but couldn't find it.
I might have downloaded it from here at some point. Does anybody recognise this?