Make sure you know who you're criticizing before you actually criticize them, because it may just come back to haunt you. Everyone is on the internet these days. The general public, celebrities, scholars, doctors, writers … every big name is out there somewhere online. This means that they can see anything, just like the rest of the world.

So, it's important to make sure you aren't accidentally talking to the person you're talking about, especially when it's something negative.

This can get pretty embarrassing, as seen in Reddit's "Don't You Know Who I Am." The phrase "don't you know who I am?" is usually seen as a pretentious, stuck-up question only said by the prude elites, but in these cases, it is totally warranted. The people on the receiving end did not, in fact, know who they were talking to, and that's an unfortunate thing.

So, here are 14 cringeworthy moments where someone didn't realize who they were talking to online.