Rig, n.
  1. A romp; a wanton; one given to unbecoming conduct. [Obs.]
  2. A sportive or unbecoming trick; a frolic.
  3. A blast of wind. [Prov. Eng.]
     That uncertain season before the rigs of Michaelmas were yet well composed.   --Burke.
  To run a rig, to play a trick; to engage in a frolic; to do something strange and unbecoming.
  He little dreamt when he set out
  Of running such a rig.   --Cowper.