"Why not?"

Teenagers are hard to talk to.  You try to engage in decent conversation by not asking Yes / No questions.  And even if you try and ask questions like “How was school?” It’ll be quick answers like, “Good.” Or “Fine.” Or “It was Ok.”

Then you get into the Why? And there comes the all powerful, “Why not?” 

It’s a seemingly simple answer that pretends to be engaging.  But in fact… it’s a rude, slap in the face remark where all it does is throw the question back at the initiator with zero response other than a tsunami of, let’s change the subject. It’s a sure sign of shutting off any desire to continue a conversation.  A proverbial slamming of the door.  And taken the wrong way… but really the only way… stop bothering me.