Hee Hee, thanks for the laughs!
I am guilty of a gross stupidity myself, on a test back in junior high. (That's what we called it back then!) On a question in science class about who discovered penicillin, I wrote down William Penn.
Dang it! Now I can't remember who really did! My friend's son was learning abbreviations when he took a history test asking why it's important to vote.
He said 'because it's a free cuntry,' but he appreviated cuntry in a way that was ~ahem!~ not reprintable here. ;o) But he did get an A on the test.
We must have been very good students...see how well we remember those little mistakes?