Shouting in Skyrim—a special ability that Dragonborn have—isn't a thing that exists, obviously. But if we were to make it real, getting a sound strong enough to physically move someone, like the Fus Ro Dah shout does, would mean suffering devastating effects according to Vsauce3.
We're talking like, the type of shock wave that would cause internal damage. Your internal organs would be destroyed. That's not even taking into account the possibility of a BLACK HOLE.
Jesus. Uh, yeah, let's not try to recreate a Fus Ro Dah in real life and just stick to Skyrim.
What if You Were Fus Ro Dah'd? [Vsauce3]