No Cup ’O Joe This Morning
To be honest, we’ve all had our forgetful moments when performing a fairly mundane task. It also didn’t help this particular person that this happened quite early in the morning. Maybe they had a really rough night or slept late, and their mind was still fuzzy.

Source: Imgur
Remember, something like this can happen to anyone. It’s just a matter of when it will happen. We can only hope that it doesn’t happen to you first thing in the morning when you need a hot cup of coffee to get you through the day.