Enjoyed it, Bob. I like the campsite scene you create with very few words. I admire the compelling character creations; using simple dialog to do it.
One thing you might consider: if ‘Kenny was already running up the path away from the campfire…’, wouldn’t he have already ‘went by’ Frog? Maybe, “Frog laughed at him as he went, shouting…”, saying “bye-bye” to the ‘by’?
Ah, brings back memories. Fun example of adolescent reasoning gone wrong. Worst we ever did was throw the cans of bug spray in the fire. They were mostly empty though.