those who grew up in Valparaiso, Chile, know "la chancha" a very unusual play for children. of course it is very dangerous also. there is: a cultural expression from the times when children played outside home, in the street. when fun came from their own inventiveness and imagination.
the guy in the drawing is an adult - to make it funnier, because under the weight of a grown up earthling 'la chancha' became like a russian roulette.