Multidirection peeing

This is one of the things that has never failed to irritate and perplex me at the same time. Why is it that when guys take the first piss in the morning the urine flies in at least two directions? This happens to me EVERY morning, usually followed by stopping awkwardly, then gently trying again, with the first few trickles showing signs of hope, only to find out that nothing is fixed when you let it loose at full power. And I keep doing it until out of frustration I just let the pee flow, not caring about it hitting the toilet seat or spilling on the floor anymore.
What's worse is whenever it happens, the urine will usually fly into every direction EXCEPT towards the toilet bowl, no matter how good your aim is. While this usually isn't a problem if you're not the one cleaning the toilet, it's still annoying when one of the piss streams hits your boxers, or your leg.

Many people say it results from leftover dried cum hanging out at the tip of your urethra and partially blocking the hole, splitting the single urine stream into separate streams. I'm having a hard time believing this, because regardless of whether or not I jerk off before I sleep at night, it still happens. And it doesn't happen if, say, I jerk off in the morning and pee later in the middle of the day. Whatever. I fucking hate when this happens.