I hide from our pups on walks with the intention of giving them that panicky feeling and to teach them they need to watch where I go.
The other day I took my daughter and her friend, both 10ish and it was hilarious when I suddenly ducked behind a bush or tree without saying a word and my daughter would immediately follow, pulling her friend with her. A few times we had Banjo hiding with us even. Then we watch the pup running back and I only call her if she runs past us without spotting us. And then of course I/we squeal when she finds me/us. I don't do it too often because I don't want them to expect it.