I’ve always wondered if the people who design urinal cakes intend for us to aim directly at the cake or the back of the urinal as if the cake wasn’t there?
Does anyone know?
Could be. I do know that some urinal manufacturers put a picture of a little bug in the enamel for us to aim at. This is to reduce splash.
Does hitting the cake directly make it dissolve faster?
I don’t think you’re supposed to aim for them.
They don’t dissolve in water/urine so it wouldn’t do anything. It may cause the cake to disappear more quickly, but that will be due to the damage done to the block by the stream (like erosion?) rather than it dissolving faster.
They don’t last forever, so they must be dissolving.
Frankly, I don’t give a rip what they want us to do. I’m aiming for the spot in the urinal that gives the least splashback, and that definitely ain’t the flat face of a urinal cake.
The first Straight Dope article I read, (I think):
Close to ten years ago, over the course of a few weeks at work, I aimed for the middle of a urinal cake, and managed to put a hole through it.
That’s right. Bow before my greatness!
Perhaps you should post of your magnificence here.
I don’t have a penis, but I do cook. A couple of weeks ago I poured milk into something I was cooking, and as it hit the flat surface of the butter already in the pan, some of the milk splashed out, making a huge mess. Wouldn’t you get a similar effect from directly peeing on something as flat and elevated as the urinal cake since urine is released with even more force than the milk was?
man, I love this place 
this line is almost as good as my favorite: the post that started “I usually keep my bladder in the refrigerator”.
(From a thread about jogging, and carrying drinking water in a “Camel-back” water bladder )
Very often the urinal cake is contained inside a plastic cage that looks invitingly like a target. If one gets past its bars, any splatter is contained within.
How can you NOT aim for the cake. The draw is irresistible.
As usual in man matters, I’m atypical. I like peeing directly into the little holes in the drain.
Marketing idea:
Urinal “cakes” made in triangular shapes and called “urinal pies”. Mmmmmm. pie!
*PLEASE *make this your signature. 
Well, now I’m getting a better visual of that saying posted in another thread:
“It’s raining harder than a cow pissing on a flat rock.”
Men will aim at anything that happens to be in a urinal.
What do you stir with? 
Which makes it even more verboten! haHA!
You eat them, of course. Why do you think they call 'em “cakes”?
or not.