The Sonic Rainboom. It seems harmless enough when you say it or think about it. But imagine that when a pony, like Rainbow Dash, creates one, it opens up a portal to another world, transporting the creator directly there. Now imagine that you're an average human sleeping the night away after a rough day at work. You hear a loud crash outside and immediately run outside to see what it is, when a panic stricken, cyan pony begins threatening to get violent if you don't back off. Weird things happen, ya know.