This happen to any other guys?

[Anomalocaris]

I went through a phase with this problem and it just disappeared. I used to have a problem urniating in general but it was very clear to me that it was anxiety related and once my stress levels reduced I found it much easier to pee.

I still can't pee at a urinal without this symptom and that's how I know that, in my case, it's psychological. Social anxiety in that case. Also my penis size is fine I just don't find something particularly comfortable about urinating in front of total strangers. I'd rather piss in front of my girlfriend (or on her, but that's another topic).

Moving away from my abusive ex-roommate and living alone where I'm infinitely happier magically made me able to pee normal, who woulda thunk it?

So there can be many causes, but in my case it was stress related.

I met your soulmate back in 1969. I reported to boot camp and went into a "receiving company" where they tested and sorted us. One guy sorted himself because he couldn't pee in a latrine with twenty urinals and twenty toilets, none of which had any sort of barrier around it. He went four days without a bowl movement or urination before he broke down. The company commander talked to us after he left and asked if any of us had showered with other students after gym class at high school. Everybody raised their hand. 

"Well, this young man was educated at home, so he never had to do that."

4 day without peeing is impressive.