Sometimes it's "Man, why are there two streams of pee coming out??" But that's pretty rare.
Generally my aim is pretty good, but then you get those occasions where I try to pee straight and it comes out shooting from the left (or right.) I go to compensate by bringing the stream back to the center of the toilet and then all of a sudden it starts shooting straight like it should. And I'm like "Oh come on!"
There's also the occasional issue of "initial fire" where we first begin peeing and it shoots out quickly and semi-explosively for like 0.5 seconds before becoming a nice even stream of piss. And that "initial fire" can cause pee to hit the rim.
But any any case, if you don't clean the rim after an accidental misfire, you're an animal.