Have you ever confidently used a new word in a sentence only to discover it was, in fact, the completely wrong word? I once referred to someone's driving as "erotic" instead of "erratic," so, yeah, I've been there.
The English language is filled with so many similar sounding words that you're bound to use the wrong one at some point. If you're lucky, you'll slip up when writing an email or jotting down a note to yourself, and you can fix it before anyone else notices it.
If you're not quite that lucky, you either say it out loud and become the butt of the joke for a few minutes or post it to social media and become the butt of the joke for a very long time.
The people in today's gallery were not very lucky.