A moment in time were a stupid action is done or a stupid question is asked that only blonde people would do. Blonde moments happen to any one.
Example1: the teacher explains that you have to write what is on the board, and then the teacher asks "Any questions" and a student ask "what do we have to do?"
Example2: a student comes in late then asks "can i go to the bathroom?"
Example3:when you repeat something some one said in class seconds after the person said you just had a blonde moment