One of the many joys of experiencing child- raising through the next generation is the 'permission to play' factor.
I came across this in a toybox at a charity sale and asked one of the women selling if it really stuck to a surface when thrown.
She didn't know. She took it, pulled her arm back and gave a pitcher-proud overarm toss. Whap!!!
It stuck neatly to a nearby filing cabinet. We grinned at each other.
At home I discovered that it sticks for a longer period of time if moistened first.
The grandboys and I will have fun discovering who can make it stick the longest and whether or not it will stick on skin and if spit works better than water for the moistener.
Memories occur of similar questions arising from suction cup darts and the father of these grandboys, and his siblings.