I saw the moon move in the sky!

I was maybe 10 or 11ish? Standing outside on the driveway with friends. I was looking up at the big full moon. From my point of view, the moon was a few feet (relatively speaking) from the top of this big tree in my neighborhood. While staring up at the moon, suddenly its position shifted a few more feet away from the tree, towards the opposite horizon. I sort of had the feeling of vertigo for a moment, and no one else saw it. But the moon was still in the new position…