Once in 7th grade I had given my teacher the homework assignment that we were supposed to do. And I did it.
Well, I forgot it on my desk at home and realized this when I got to school in the morning.
So when she asked "Did you do your homework?", I said "Yes, but I forgot it at home." And she says: "Well, if you didn't bring it, that means you didn't do it. Stay with me during recess."
And so I stayed during recess
Then, a few minutes before we went inside, she asked me "Why didn't you do your homework?" I said "I did, but you assumed I didn't do it because I forgot it at home." And this mfer said "Why didn't you tell me?"