The word "pendulum" is used so infrequently that any time I hear it I automatically thing of the Roger Miller. With apologies to the late, great Roger Miller, for some reason I thought of these lyrics after seeing DUmbFuk's post...
Government swings like a pendulum do.
DUmmies on cry-cycles two by two.
DemonRats wicked and evil as sin.
Their slaves, the DUmmie minions, beg to join in.