That K isn't even trying to look like an E, which means this person really thinks it's "Cock," not "Coke." I'm not surprised though. I used to work at the movie theater and many people with latin accents would say "Cock" instead of "Coke." No one should be made fun of for having an accent, and I'm not really making fun of them when I say this, but - it was hilarious every time. I couldn't help but smile when a guy asked me for a large you-know-what. Then once they left I'd cry because I don't have a large you-know-what.
At least a lot of restaurant patrons got a good laugh out of it while this was up. You know what they didn't get though? A Coke. As much as this sign makes me smile, it doesn't beat the cool refreshing taste of a Coke.