This thread goes back to before I joined, and couldn't believe when I saw this today. This happens to me from time to time at home if I sit down too fast, wrong (dick first into the toilet), or happen to be having a "heavy cock" day, if you know what I mean. It is gross, considering what bacteria is in that water. But my routine usually takes me into the shower afterwards. (BTW, oval heaped toilet bowls rule! So comfortable, and can let everything hang freely. I will never have a round toilet again where I have to put my hands in the toilet holding my dick down when I pee.)
Anyway, this problem doesn't happen in public toilets since if I need to take a dump, I make sure I hold the boys securely in my hands and make sure they don't dunk in the water.