Believe it or not, this is not a commercial for World War Z

...although it does include a conversation between two people who are clearly dead, and have been for quite some time.

I mean, just look at this:  Wife mutters "that's just brilliant" in a carefully measured, emotionless monotone.   Husband, who seems genuinely surprised to hear words come out of the corpse he's married to, gives a sort-of, "yes, I'm acknowledging you just spoke" response.

Somehow, this turns into a "let's compare these two things with two other things, because about five years ago we both ran out of things to say to each other, but weren't willing to admit that we made a bad choice and rushed into a cold, distant marriage of convenience.  Let's take this opportunity to have a something that bears some resemblance to a conversation, even if it lasts only a few seconds, because it would be kind of fun to at least PRETEND not to be among the walking dead."

As usual (for commercials,) both of these zombies manage to pull up the same mental image.  This isn't a gift shared only by the Undead.  All couples in tv advertisements have it.  It's supposed to make sense to us, The Living.  It doesn't (judging from the YouTube comments, a lot of walking corpses enjoy surfing the web for ad clips and then commenting on them- and they have terrible taste.)

My guess is that if this couple doesn't proceed to feasting on brains within a few minutes, and are in fact actual, living, breathing people, they'll relapse into silence for several more hours until one of them finds something else to be impressed by, leading to another 8-second conversation that keeps life bearable for a few moments.  Maybe they'll note the "brilliance" of the Kiss and Ride, one of them mentioning that hey, that's a lot better than a Kiss OR Ride, for some reason.  Then they'll both die just a little more.

That is, unless they really are already dead.  It's hard to tell.