The embarrassment is still haunting me

I'm such an idiot for not being able to tell the difference between 'Southward Invasion' and 'Northward Invasion'.

I'm still so embarrassed.

I'm a total moron.

I could understand mixing up similar-sounding vowels like 'ae' and 'e',

but this is something I learned in school, heard from my grandma, and heard from my grandpa until the day he passed. I used to talk about it in front of my friends, and I even got a 90 on my history exam because I knew this stuff. History was the one subject I was actually proud of, yet just because I haven't studied it for 4 years since the exam, I can't even distinguish those two terms anymore.

Don't stop studying like I did just because the SATs are over.

You think it won't happen to you? If you stop studying, you'll end up just like me.

I'm seriously so ashamed.

If I had just been confused, it wouldn't be so bad, but I even insisted that I was right.

My number one rule of life is that even if you're wrong, a man should stand his ground and stick to his guns,

but this wasn't even the argument I wanted to make, so I just look like a total loser now.

I'm a complete egghead. I'm the dumbest of the dumb.