I don't know why or how it happens, but that shit will more often than not happen every time if you take a piss after previously ejaculating.

Also, it can sometimes occur say if you have been jogging or running. Its happened to me a couple of times.. I've rushed home desperate for a piss, got to the toilet and my aim was completely fucking shot. I have found though that for the latter, after running or some shit that if you give it a shake before release you should be just fine.

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