Yesterday, we informed you about Poke, the mobile app brought to you by Facebook. If you've already given it a whirl, you probably heard a faint voice alert whenever someone were to "poke" you. But do you know who's the person you're hearing? According to TechCrunch, that is none other than Mark Zuckerberg. As the story goes, Zuckerberg started it off as a joke, but after only a rumored 12 days, the concept was completed with the CEO's voice in it. Check it out below. 

 

[via The Verge]