Breaking Beer Bottles
The action of throwing empty beer bottles in gardens at night is used to scare off the young ones away so they won't be there to get molested by sexual predators.
"Mommeh, there be broken glass all over!"
-"Let's go home, my special boy! Some other special dude and two chicks must have been breaking beer bottles all night!"
-"Let's go home, my special boy! Some other special dude and two chicks must have been breaking beer bottles all night!"