*What follows contains minor plot information, but nothing really critical. I don't think a "spoiler alert" is really warranted, but I figured I'd still give it a mention, 'cause you just never know.*
The heroes, having gotten themselves trapped in a building with a throng of zombies outside, just happen to have a recently murdered corpse on their hands. The logical thing to do, of course, is to feed the dead guy to the zombies, thus buying themselves time to make a stealthy escape. Which is what they did. (I mean, wouldn't you?)
The zombies feast, and the good guys make their getaway. And the scene ends (for some reason) with a close-up shot of bloody hands grabbing at their food. It was a little over-the-top, which made it mildly amusing in itself. But the true hilarity ensued when they cut away for the sponsor's message.
I'm sorry, but did you seriously just linger over a shot of zombies eating a fresh corpse and then tell us to "taste why fresh is better"? Really?!
Great choice in advertising placement, KFC. If your goal was to make me laugh so hard that I couldn't catch my breath, you completely succeeded. If your goal was to sell me some chicken? ... Yeah, I'll probably still eat your chicken. You win.