(Not my dumb moment but-)
In Language (im a 5th grader, btw) we were doing a DLR ( Daily Language Review). And we were correcting a sentence when Audrey said, "Mine's different from yours, it says (I forgot what it said)."
And then Geneva Flipped over the paper to the back side and slowly says, "You're on Wednesday...?"
Everyone laughed.
The end.
