People have to be careful when posting online these days. Everyone has an account on every social media platform now. This includes experts, celebrities, artists and much more. Anyone can see any post put into the world.

This means that people could be called out for making things up, making false claims or spreading misinformation by experts on the topic, which is just embarrassing.

Usually, someone asking the phrase, "Don't you know who I am?" comes off as pretentious and egotistical. Sometimes, though, some people truly do not know who they are talking to, and then the question is warranted.

Reddit's "Don't You Know Who I Am?" is a subreddit where people post the most cringeworthy interactions between people and the folks they didn't know they were talking to.

From people being called out by scientists and experts to celebrities stomping out rumours, this whole subreddit is a facepalm.

Here are 25 of them to make everyone a little uncomfortable.