The boy goes to school.
He makes excellent grades and listens to his teachers most of the time.
I was never good in school.
I seldom listened to my teachers - EVER!
The boy came into my room.
He said, "Mom - What's an ordered pair?"
The mom thinks ... *shoes - they come in pairs*
The mom thinks some more ... *eyes - they come in pairs too*
The mom thinks even harder *twins - I've got some of those - they are definitely a pair*
The mom thinks so hard her eyes nearly pop out of her skull *Hands - everyone has a pair of those*
Meanwhile, getting no quick answer from the mom, and seeing that her eyes are beginning to buldge out of her eye sockets, the boy explains what he means. He talks really fast, reading the definition from the paper in his hands, he says "A pair of numbers used to locate a point on a plane," he then looks up at the mom and waits.
The mom cracks a slight smile.
Then ... not being able to help herself ... the mom throws back her head and laughs so hard she almost pees her pants! Tears begin to roll down her cheeks from all the hysterical laughter. She is laughing all alone, but she can not stop. The more she thinks about the question - the more she laughs. She can't hardly regain her composure, but she finally wipes the tears from her eyes and looks down at her small son.
The boy cracks an aggrivated smile and looks at the mom with a face that says, Never mind - and he turns on his heels and leaves the room.
On the upside ... "A pair of numbers used to locate a point on a plane," - - - - - HAHAHAHAHAHAHHAHAHAHAHHAHAHAHAHAHAHA! I'll be right back - gotta go pee! (* hear off in the distance the mom still laughing hysterically from the toilet*)