I've noticed...

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Some people can urinate with an erection and some can't. It doesn't do you any damage if you do.

Urinating with an erection is possible (for some of us) but a bit more difficult. You've gotta be able to get the aim right and when erect that is a problem, best done while sitting down I find. As to the urine going everywhere...yep, its the result of semen still in the urethra. Again, sitting down might help, or make sure you "milk" the lil guy good when done to remove as much as possible.

There is a mechanism in your urethra in which the tube from your bladder is blocked during an erection and shortly after ejaculation. The reason it's this way is because when you are having intercourse, you would not want to suddenly urinate in the woman's vagina (it would be gross and the urine would be poisonous to the sperm). The only reason the tube doesn't open again right after ajaculation is because if takes time for the boner to go away. Since this is a special mechanism in your body and is done for a reason, you should probably not force yourself to urinate (like you said, 'it got all over'), doing so may damage the mechanism, thusly allowing urine to seep into the urethra during sexual contact that could make it difficult to have healthy sperm.

By the way, it isn't a result of the semen in the urethra, rather, it is a byproduct of the urethra and other tubes in your penis constricting with the much larger blood vessels (as with the erection).

that's all normali'm the same

I can piss just fine after jacking off but i have to push

lol if i try to pee with a boner its really hard (uah!) nah its like pointing up.. so i have to lean over so my torso is parallel to the horizon... does that make any sense?thats very difficult!and sometimes it hurts with a full bonerand yeh, soemtimes goes everywhere, especially if mr man downstairs has been treated roughly

Just to clear things up here:- It is possible to urinate with a full erection - its just more difficult to.- It is not possible to urinate during ejaculation, as there is a valve that shuts off the bladder during ejaculation. This valve sometimes is slow to relax after ejaculation, and thus it may be difficult to urinate for a few minutes after ejaculation.

I don't think most of y'all understand MY situation though. It's easy to hold back urine when jacking off and when I'm done, I don't force it to come out at all. It just goes left and right. I understand that it's because the valve is still partly closed, so it comes out irregulary. I don't think I'm screwing my self up because I can hold back piss like it's anything when I am jacking off and usually I piss before, so I won't upset my woman

Yeah, its right. Its like Jim Carrey in Me, Myself & Irene.