Mrs. Crawford Was Right!

Mrs. Crawford said that everyone has their favorite pet peeves about the English language; if you break these rules, they’ll zap you.
She was right.
Your == belonging to you NOT the contraction YOU ARE.
So “That’s your luggage” is right.
“Your not supposed to do that” is WRONG.
Bugs the crud out of me.
To[o] bad! Maybe I’m getting to be an old fuddy-duddy!