AskImam.com is amazingly funny.
Here is an example question:
1. Can I perform ghusl by just letting the Mani flow without doing wudu if I am not going to perform Salāh? 2. I just did my ghusl and prayed. However, after my Salāh I saw semen. Do I have to wash myself again and repeat the prayer or is my prayer valid?The answer was incomprehensible. Here's an excerpt:
Regarding your second question, if you witnessed semen after your Salāh, then ghusl will become fardh upon you but repeating your Salāh will not be necessary.?????
I can’t get the site to work for me...I’m trying to get into the “women” section. That should be entertaining.
I do hear, however, that once your ghusl becomes fardh there’s no turning back.