Your Weird Penis Explained. Here are some things you may or may not know about your penis. Your aim is of. Why does your urine stream sometimes take a left turn into the bathtub? The problem is your meatus, or the tiny opening at the tip of your penis. "Urine spirals out of your urethra like a bullet out of a gun. If there's dried mucous, ejaculate, or any other irregularity in the meatus, it can make the stream split or go off-centre." This happens most often in th.