It's hard to be a puppy. All that cuteness and people always cooing "awwww!" at you and having little puppy paws that make many folks just want to eat you up.
Sometimes you simply have to take a nap to escape it all. So you cuddle into a warm lap, and what happens? You get the hiccups. And then your humans think you're even more adorable, so they grab a camera and film the whole thing and put it on the internet.