Sweet ass ?

Sweet means good, and sweet ass is simply an intensifier in this case. "Sweet ass jobs?, Or Wal-Mart" (nightmare punctuation) means a contrast between desireable employment or lowly-paid drudge work.

I am the business manager of a small and prosperous low-voltage security company.

Same as what Setanta said; "sweet ass" is verrrrry good.

I'm the boss (President of my company; which is more important-sounding than it actually is; I'm a self-employed insurance broker. It's a sweet-ass job.)

Oh, and we've got a good Wal-Mart thread going here.

Thanks for your sweet ass replies!
I've totally got it.

Cool Dude . . .

I should mention, ass does not actually taste sweet unless exceptionally clean.

Oh yeah, what about candy-ass?

You, ah, are not eating it right....

If I have to give a rim job, I expect a rusty trombone in return. I feel that's fairplay, ha ha!