Atrocities of Spelling

I saw two signs that made my head twitch, within less than half a mile of each other today. One was at Joe's Crab Shack and the marquee out front read:

Come try our roccin' grilled shrimp!

Is there a play-on-words or slang-thing there that I'm missing?

And then, a few doors down at Pappasitas:

Now interviewing for compesant managers

Surely they meant COMPETENT? Maybe they should instead be interviewing for compesant marquee writers.