""Oh, you're a teacher? Please explain to me how my child's teacher had the audacity to give them a C despite it being very obvious that my child is a genius!"
Bonus points if they want you to explain the grading criteria in a completely different subject and level of schooling than you teach. Like, I teach high school and community college English and Social Studies - why do you expect me to know the grading criteria for middle school math?"
""You're in the Air Force? So you fly planes?"
Nah I fly a desk."