mouse dive happened to me too, so confusing! and I am no grand-ma
This happened to my Mom when she was taking computer classes. The teacher explained to her what was wrong. Her response: You said it’s called a mouse, a mouses tail is in the back right?
I guess that means left and right click in the left/right “cheek” and not the mouse eyes. Not sure how the analogy works for the middle mouse button and scroll wheel then. lol Eek.