"They're playing piggy-back" or "They're playing leap frog"
or
"They're mating" (when they don't know what "mating" means and they ask, you pretend you didn't hear them)
"They're playing piggy-back" or "They're playing leap frog"
or
"They're mating" (when they don't know what "mating" means and they ask, you pretend you didn't hear them)
Apparently Noel Coward was taking a walk with a young godchild when the latter saw a pair of dogs doing what comes naturally. The child was curious and asked for an explanation for this behaviour.
Coward's response was to explain that the dog in front was blind and the one behind was helping his friend move....