Well, I'm not sure I'd go to the hospital and play this to cheer Billy up...he might get a kick out of it afterward.

I think the second verse is kind of harsh actually -- it makes it sound like whatever happens is his fault.

I like the third verse. Honestly, it's the only thing that struck me as funny.

It might work better if you told it from the point of view of Billy and made him sound stoic and tough.

I'm Billy. I've got an aneurism, it's internal terrorism
Been thinkin' about my baptism, everybody pray
Wife and daughter scared to death, sorry, sweetheart, I said death
I'll just breathe a lot of breaths, it's gon' be okay

Ain't no need for pessimism, they gon' get the aneurism
Let's all think futurism. I'm Billy, and I'm gonna try.
Sure we might be scared to heck. Come on honey, hug my neck.
Aneurism's a little speck. Our love's a mile wide.

Yeah, life is full of ups and downs, sorry, sweetheart, I said down
Come on, now, wipe that frown, negative won't do
I'm Billy, and listen, this is key, If I wake up, I'll try to pee
If the bed is wet, glory be, Billy made it through