Answer:
A first job for many kids, this could be described as "Media Distribution Management.
What do cows tell each other at bedtime?
I run over fields and woods all day. Under the bed at night I sit not alone. My tongue hangs out, up and to the rear, awaiting to be filled in the morning
Commits friendly home invasions one night a year.
Why do birds fly south for the winter?
Forward Iβm heavy, but backwards Iβm not.